Control methods for seat components, seats and cockpits

Abstract

This disclosure relates to a control method for a seat assembly, a seat, and a cockpit. The seat assembly includes a seat back and a seat cushion that move independently. The control method includes: acquiring basic parameters of the seat assembly, including the current and target angles of the backrest body relative to the backrest rocker arm, the current and target angles of the backrest rocker arm relative to the base, and the current and target angles of the seat cushion body relative to a first link; based on the basic parameters, determining a linear correlation setting for at least one of the first angular velocity of the backrest body, the second angular velocity of the backrest rocker arm, and the third angular velocity of the seat cushion, according to a proportional coefficient and a compensation amount; and controlling the operation of the corresponding motor according to the angular velocity during the linkage movement time of the seat assembly.

Description

Technical Field

[0001] This disclosure relates to the field of seating, and in particular to a method for controlling a seating assembly, a seat, and a cockpit. Background Technology

[0002] Traditional zero-gravity seats typically rely on a single zero-gravity motor to drive the mechanical structure, causing the entire seat to rotate around a fixed axis. During this process, the angle between the backrest and the seat cushion remains at a preset fixed ratio, making it impossible to independently and freely adjust the backrest or seat cushion. Furthermore, the scenarios in which the seat can be used are limited. Summary of the Invention

[0003] A brief overview of this disclosure is given below to provide a basic understanding of some aspects of it. However, it should be understood that this overview is not an exhaustive summary of this disclosure. It is not intended to identify key or essential parts of this disclosure, nor is it intended to limit the scope of this disclosure. Its purpose is merely to present certain concepts of this disclosure in a simplified form as a prelude to the more detailed description that follows.

[0004] According to a first aspect of this disclosure, a control method for a seat assembly is provided. The seat assembly includes a seat back and a seat cushion, the seat back and the seat cushion being movable independently. The seat back includes a backrest rocker arm rotatable relative to a base and a backrest body connected to and pivotable relative to the backrest rocker arm. The seat cushion includes a seat cushion body and a first link connected to and pivotable relative to the seat cushion body. The seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm. The seat cushion includes a third motor for controlling the relative motion between the seat cushion body and the first link. The control method includes: acquiring basic parameters of the seat assembly, the basic parameters including the relative motion of the backrest body relative to the base. The first current angle and the first target angle of the backrest rocker arm, the second current angle and the second target angle of the backrest rocker arm relative to the base, and the third current angle and the third target angle of the seat cushion body relative to the first link; based on the basic parameters, according to at least one of the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement, a linear correlation setting is determined for at least one of the first angular velocity, the second angular velocity, and the third angular velocity according to a proportional coefficient combined with a compensation amount; during the linkage movement time of the seat assembly, the first motor is controlled to run according to the first angular velocity, the second motor is controlled to run according to the second angular velocity, and the third motor is controlled to run according to the third angular velocity.

[0005] In some embodiments, determining the linear correlation setting of at least one of the first angular velocity, the second angular velocity, and the third angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement, according to a proportional coefficient combined with a compensation amount, includes: determining the first angular velocity and the second angular velocity based on the third angular velocity and basic parameters.

[0006] In some embodiments, the control method further includes at least one of the following steps: determining a third angular velocity based on a third current angle and a third target angle; determining a second angular velocity based on a second current angle and a second target angle; or determining a first angular velocity based on a first current angle and a first target angle.

[0007] In some embodiments, the seat assembly is configured to move from a first position to a second position, wherein the height of the seat cushion in the second position is higher than its height in the first position, a first current angle, a second current angle, and a third current angle are angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position, and a first target angle, a second target angle, and a third target angle are angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position, wherein the control method includes controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

[0008] In some embodiments, the seat assembly is configured to move from a second position to a first position, wherein the height of the seat cushion in the second position is higher than its height in the first position, a first current angle, a second current angle, and a third current angle are angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position, and a first target angle, a second target angle, and a third target angle are angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position, wherein the control method includes controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

[0009] In some embodiments, the seat assembly is configured to move between a first position and a second position via dynamic control, wherein the height of the seat cushion in the second position is different from its height in the first position, a first current angle, a second current angle, and a third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly before the start of dynamic control, and a first target angle, a second target angle, and a third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly after the completion of dynamic control, wherein the control method includes controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

[0010] In some embodiments, the control method further includes controlling the proportional coefficient and the compensation amount to satisfy that: during each unit angle change of the angle corresponding to the seat cushion body, the absolute value of the change in the angle between the seat cushion and the seat back is less than or equal to a second threshold.

[0011] In some embodiments, the control method further includes: selecting a first reference point on the seat back and a second reference point on the seat cushion to determine the horizontal relative distance between the first reference point and the second reference point in the horizontal direction and the vertical relative distance in the vertical direction; and controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the range of change of the horizontal relative distance is within a first preset interval and the range of change of the vertical relative distance is within a second preset interval, and that during each unit angle change of the angle corresponding to the seat cushion body, the absolute value of the change in the range of change of the horizontal relative distance and the vertical relative distance is less than a third threshold.

[0012] In some embodiments, the seat assembly is configured to move from a designed position to a reclining position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the reclining position, the seat back is at a predetermined angle relative to the seat cushion to allow the occupant to recline to the maximum rearward adjustment position. A first current angle, a second current angle, and a third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the designed position; a first target angle, a second target angle, and a third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the reclining position. The movement of the seat assembly... The process includes a first stage and a second stage, with the second stage corresponding to the linkage movement time. The control method includes: taking the direction of movement of the seat back from the designed position to the reclining position as the first direction, in the first stage, determining the second reverse angular velocity of the backrest rocker arm moving in the opposite direction to the first direction, and controlling the second motor to run according to the second reverse angular velocity until the seat back moves to the first position; and in the second stage, controlling the first motor, the second motor, and the third motor to run according to the first angular velocity, the second angular velocity, and the third angular velocity respectively, wherein the first position is set so that the movement of the seat back does not interfere with the movement of the seat cushion in the second stage.

[0013] In some embodiments, the seat assembly is configured to move from a reclining position to a design position, wherein in the design position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the reclining position, the seat back is at a predetermined angle relative to the seat cushion to reach a maximum rearward adjustment position. A first current angle, a second current angle, and a third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the reclining position. A first target angle, a second target angle, and a third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the design position. From the corresponding angle, the movement process of the seat assembly includes a first stage and a second stage, with the second stage corresponding to the linkage movement time. The control method includes: in the first stage, controlling the first motor to run independently according to a first independent angular velocity until the seat back moves to a first position; and in the second stage, controlling the first motor, the second motor, and the third motor to run according to the first angular velocity, the second angular velocity, and the third angular velocity respectively until the backrest body, the backrest rocker arm, and the seat cushion body move to the designed position, wherein the first position is set so that the movement of the seat back does not interfere with the movement of the seat cushion in the second stage.

[0014] In some embodiments, the seat cushion further includes a second link and a third link, the second link being connected to and pivotable relative to the seat cushion body, one of the first and second links being located on the side of the seat cushion body closer to the seat back, and the other of the first and second links being located on the side of the seat body away from the seat back, a first end of the third link being connected to and pivotable relative to the base, and a second end of the first and second links away from the seat back being connected to and pivotable relative to the third link, wherein the seat cushion further includes a fourth motor for controlling the third link, the seat assembly being configured to move from a design position to a zero-pressure position, wherein in the design position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the zero-pressure position, the seat assembly is adjusted to a preset zero-pressure state, wherein the control method further includes: the basic parameters further including a fourth current angle and a fourth target angle of the third link relative to the base; determining a fourth angular velocity for the fourth motor to control the movement of the third link based on a third angular velocity and the basic parameters; and determining a fourth angular velocity for the fourth motor to control the movement of the third link based on a third angular velocity and the basic parameters; and determining a fourth angular velocity for the fourth motor to control the movement of the third link based on a third angular velocity and the fourth target angle. The fourth motor is controlled by four angular velocities. The first, second, third, and fourth current angles are the angles corresponding to the backrest body, backrest rocker arm, seat cushion body, and third link when the seat assembly is in its designed position. The first, second, third, and fourth target angles are the angles corresponding to the backrest body, backrest rocker arm, seat cushion body, and third link when the seat assembly is in a zero-pressure position. The movement of the seat assembly includes a first stage and a second stage, with the linkage movement time corresponding to the sum of the times of the first and second stages. The control method includes: in the first stage, controlling the first, second, and fourth motors according to the first, second, and fourth angular velocities until the seat backrest moves to the first position; and in the second stage, controlling the first, third, and fourth motors according to the first, third, and fourth angular velocities, where the first position is set so that the movement of the seat backrest does not interfere with the movement of the seat cushion during the second stage.

[0015] In some embodiments, the seat cushion further includes a second link and a third link, the second link being connected to and pivotable relative to the seat cushion body, one of the first and second links being located on the side of the seat cushion body closer to the seat back, and the other of the first and second links being located on the side of the seat body away from the seat back, a first end of the third link being connected to and pivotable relative to the base, and a second end of the first and second links away from the seat back being connected to and pivotable relative to the third link, wherein the seat cushion further includes a fourth motor for controlling the third link, the seat assembly being configured to move from a zero-pressure position to a design position, wherein in the design position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the zero-pressure position, the seat assembly is adjusted to a preset zero-pressure state, wherein the control method further includes: the basic parameters further including a fourth current angle and a fourth target angle of the third link relative to the base; determining a fourth angular velocity for the fourth motor to control the movement of the third link based on a third angular velocity and the basic parameters; and according to the... The fourth motor is controlled by four angular velocities. The first, second, third, and fourth current angles are the angles corresponding to the backrest body, backrest rocker arm, seat cushion body, and third link when the seat assembly is in a zero-pressure position. The first, second, third, and fourth target angles are the angles corresponding to the backrest body, backrest rocker arm, seat cushion body, and third link when the seat assembly is in a designed position. The movement process of the seat assembly includes a first stage and a second stage, with the linkage movement time corresponding to the sum of the times of the first and second stages. The control method includes: in the first stage, controlling the first, third, and fourth motors according to the first, third, and fourth angular velocities until the seat cushion moves to the first position; and in the second stage, controlling the first, second, and fourth motors according to the first, second, and fourth angular velocities, where the first position is set so that the movement of the seat cushion does not interfere with the movement of the seat back during the second stage.

[0016] In some embodiments, the seat assembly is configured to move from a design position to an easy-access position, wherein in the design position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the easy-access position, the seat assembly undergoes a predetermined movement to increase the space behind the seat assembly. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the design position, and the first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the easy-access position.

[0017] In some embodiments, the seat assembly is configured to move from an easy-access position to a design position, wherein in the design position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the easy-access position, the seat assembly undergoes a preset movement to increase the space behind the seat assembly. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the easy-access position, and the first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the design position.

[0018] According to a second aspect of this disclosure, a control method for a seat assembly is provided. The seat assembly includes a seat back and a seat cushion, the seat back and the seat cushion being movable independently. The seat back includes a backrest rocker arm rotatable relative to a base and a backrest body connected to and pivotable relative to the backrest rocker arm. The seat cushion includes a seat cushion body and a first link connected to and pivotable relative to the seat cushion body. The seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm. The seat cushion includes a third motor for controlling the relative movement between the seat cushion body and the first link. The control method includes: acquiring a seat assembly base... The basic parameters of the seat assembly include the first current angle and the first target angle of the backrest body relative to the backrest rocker arm, the second current angle and the second target angle of the backrest rocker arm relative to the base, and the third current angle and the third target angle of the seat cushion body relative to the first link. Based on the basic parameters of the seat assembly, the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement are linearly correlated according to the proportional coefficient and the compensation amount. During the linkage movement time of the seat assembly, the first motor is controlled to run according to the first angular velocity, the second motor is controlled to run according to the second angular velocity, and the third motor is controlled to run according to the third angular velocity.

[0019] In some embodiments, the control method further includes controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold, and during each unit angle change of the angle corresponding to the seat body, the absolute value of the change in the angle between the seat cushion and the seat back is less than or equal to a second threshold.

[0020] In some embodiments, the control method further includes: selecting a first reference point on the seat back and a second reference point on the seat cushion to determine the horizontal relative distance between the first reference point and the second reference point in the horizontal direction and the vertical relative distance in the vertical direction; and controlling a proportional coefficient and a compensation amount to satisfy that: during the movement of the seat assembly, the range of change of the horizontal relative distance is within a first preset interval and the range of change of the vertical relative distance is within a second preset interval, and that during each unit angle change of the angle corresponding to the seat cushion body, the absolute value of the change in the range of change of the horizontal relative distance and the vertical relative distance is less than a third threshold.

[0021] According to a third aspect of this disclosure, a seat is provided, comprising a seat assembly consisting of a seat back and a seat cushion, the seat back and the seat cushion being movable independently, wherein the seat back includes a backrest rocker arm rotatable relative to a base and a backrest body connected to and pivotable relative to the backrest rocker arm, the seat cushion including a seat cushion body and a first link connected to and pivotable relative to the seat cushion body; the seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm, the seat cushion including a third motor for controlling the relative movement between the seat cushion body and the first link, wherein the seat assembly can be controlled according to the control method of any of the foregoing embodiments.

[0022] According to a fourth aspect of this disclosure, a cockpit is provided, including a base and a seat according to the foregoing embodiments, wherein the seat is disposed on the base.

[0023] Other features and advantages of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0025] This disclosure can be more clearly understood with reference to the accompanying drawings and the following detailed description.

[0026] Figure 1 A flowchart of a control method for a seat assembly according to some embodiments of the present disclosure is shown.

[0027] Figure 2 This is a schematic perspective view of a seat assembly according to some embodiments of the present disclosure, wherein the seat is in the designed position and the outer covering of the seat assembly is removed to show the internal skeleton.

[0028] Figure 3 yes Figure 2The diagram shows a schematic of the linkage mechanism of the seat assembly, where the linkage mechanism is in the designed position.

[0029] Figure 4 This is a schematic perspective view of a seat assembly according to other embodiments of the present disclosure, wherein the seat is in the designed position and the outer covering of the seat assembly is removed to reveal the internal skeleton.

[0030] Figure 5 yes Figure 4 The diagram shows a schematic of the linkage mechanism of the seat assembly, where the linkage mechanism is in the designed position.

[0031] Figure 6 This is a schematic perspective view of a seat assembly according to further embodiments of the present disclosure, wherein the seat is in the designed position and the outer covering of the seat assembly is removed to reveal the internal frame.

[0032] Figure 7 yes Figure 6 The diagram shows a schematic of the linkage mechanism of the seat assembly, where the linkage mechanism is in the designed position.

[0033] Figure 8 yes Figure 2 The diagram shows the position of the seat assembly during the height adjustment process.

[0034] Figure 9 yes Figure 2 This diagram illustrates the position of the linkage mechanism of the seat assembly during height adjustment.

[0035] Figure 10 yes Figure 2 The diagram shows the seat assembly in a reclining position.

[0036] Figure 11 yes Figure 2 The diagram shows the linkage mechanism of the seat assembly in the reclining position.

[0037] Figure 12 yes Figure 2 The diagram shows the seat assembly in the zero-pressure position.

[0038] Figure 13 yes Figure 2 The diagram shows the linkage mechanism of the seat assembly in the zero-pressure position.

[0039] Figure 14 yes Figure 2 The diagram shows the seat assembly in an easy-access position.

[0040] Figure 15 yes Figure 2The diagram shows the linkage mechanism of the seat assembly in the easy-access position.

[0041] Figure 16 A flowchart of a control method for a seat assembly according to some other embodiments of the present disclosure is shown.

[0042] Note that in the embodiments described below, the same reference numerals are sometimes used across different figures to denote the same parts or parts having the same function, and repeated descriptions are omitted. In this specification, similar reference numerals and letters are used to denote similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0043] For ease of understanding, the positions, dimensions, and extents of the structures shown in the accompanying drawings and other materials may not represent actual positions, dimensions, and extents. Therefore, the disclosed invention is not limited to the positions, dimensions, and extents disclosed in the accompanying drawings and other materials. Furthermore, the drawings are not necessarily drawn to scale, and some features may be enlarged to show details of specific components. Detailed Implementation

[0044] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0045] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. Those skilled in the art will understand that they merely illustrate exemplary ways that can be used to implement this disclosure, and are not exhaustive.

[0046] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0047] The inventors noticed that after changing the seat adjustment from a single linkage structure to a multi-link combination movement, under certain working conditions, the different linkage movements may produce problems such as gaps or compression, and unstable function, which may affect passenger safety.

[0048] To address the aforementioned problems, this disclosure proposes a control method for seat assemblies.

[0049] In exemplary embodiments of this disclosure, the seat assembly may include a seat back and a seat cushion, which are movable independently. The seat back may include a backrest rocker arm pivotable relative to a base and a backrest body connected to and pivotable relative to the backrest rocker arm. The seat cushion may include a seat cushion body and a first link connected to and pivotable relative to the seat cushion body. The seat back may include a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm. The seat cushion may include a third motor for controlling the relative movement between the seat cushion body and the first link.

[0050] like Figure 1 As shown, the control method 100 for the seat assembly may include: step S110, obtaining basic parameters of the seat assembly, including a first current angle and a first target angle of the backrest body relative to the backrest rocker arm, a second current angle and a second target angle of the backrest rocker arm relative to the base, and a third current angle and a third target angle of the seat cushion body relative to the first link; step S130, based on the basic parameters, determining a linear correlation setting for at least one of the first angular velocity, the second angular velocity, and the third angular velocity of the seat cushion body according to at least one of the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement, using a proportional coefficient combined with a compensation amount; step S140, controlling the operation of the first motor according to the first angular velocity, the operation of the second motor according to the second angular velocity, and the operation of the third motor according to the third angular velocity during the linkage movement time of the seat assembly.

[0051] In some embodiments, such as Figure 2 As shown, the seat assembly may include a seat cushion body 2 and a backrest body 3. Figure 2 Only the internal frame after removing the outer covering is shown. It is understood that the outer covering may include internal support (such as cotton, springs, etc.) and external material (such as leather, fabric, etc.). In this disclosure, unless otherwise specified, "no interference or gaps between the seat cushion and seat back" means that the contact portions of their outer coverings remain relatively stationary and in contact during movement. It is understood that the seat cushion body 2 and the backrest body 3 are the parts that directly contact or interact with the occupant and the seat; the actual seat assembly may contain other functional structures in locations not visible to the occupant and / or internally.

[0052] like Figure 3 As shown, the linkage mechanism in the seat assembly may include a first linkage mechanism 310 for the backrest ( Figure 3 (Middle pink part) and the second linkage mechanism 210 for the seat cushion ( Figure 3 (Middle blue section).

[0053] The first linkage mechanism 310 may include a backrest rocker arm 311 and a backrest body 3. The backrest rocker arm 311 can be assembled on the base via a second pivot portion 313 and can pivot relative to the base. It is understood that, in this disclosure, the base may refer to the bottom surface or device on which the seat is installed when used in scenarios such as vehicles, ships, and cinemas, for example, it may be installed on a structure located on the base such as a slide rail or a rotating base, which will not be elaborated here. For the sake of simplicity, the following embodiments mainly use the scenario of the seat being installed on a base in the vehicle cabin. Additionally, the backrest body 3 can be connected to the backrest rocker arm 311 via a first pivot portion 315 and can pivot relative to the backrest rocker arm 311.

[0054] The first linkage mechanism 310 may further include a first motor located at the first pivot 315, which can be used to control the movement of the backrest body 3, i.e., adjust the angle between the backrest body 3 and the backrest rocker arm 311. The first linkage mechanism 310 may further include a second motor located at the second pivot 313, which can be used to control the movement of the backrest rocker arm 311, i.e., adjust the angle of the backrest rocker arm 311 relative to the base.

[0055] It is understandable that when the first motor and the second motor are not working, the first linkage mechanism 310 can be locked, so that the seat back 3 cannot move.

[0056] The second linkage mechanism 210 may include a seat cushion body 2, a connecting rod 211 near the backrest, a connecting rod 212 away from the backrest, and a third connecting rod 217. One end of the connecting rod 211 near the backrest can be assembled to a base via a third pivot 213 and can pivot relative to the base. The other end of the connecting rod 211 near the backrest can be connected to the seat cushion body 2 via a fourth pivot 214 and can pivot relative to the seat cushion body 2. One end of the connecting rod 212 away from the backrest can be connected to the seat cushion body 2 via a fifth pivot 215 and can pivot relative to the seat cushion body 2. The other end of the connecting rod 212 away from the backrest can be connected to one end of the third connecting rod 217 via a sixth pivot 216 and can pivot relative to the third connecting rod 217. The other end of the third connecting rod 217 can be assembled to a base via a seventh pivot 218 and can pivot relative to the base.

[0057] The second linkage mechanism 210 may further include a third motor for controlling the relative movement between the seat cushion body 2 and the first link. Since links 211 and 212 jointly control the position and / or height of the seat cushion body 2, one of the links 211 near the backrest end or the link 212 away from the backrest end can be referred to as the first link, and the other as the second link. In a non-limiting embodiment, if link 211 is the first link and link 212 is the second link, the third motor can be located at the fourth pivot 214 where the first link is connected to the seat cushion body 2, or at the third pivot 213 where the first link is mounted on the base or connected to the third link. Alternatively, if link 212 is the first link and link 211 is the second link, the third motor can be located at the fifth pivot 215 connected to the seat cushion body 2, or at the sixth pivot 216 away from the backrest end.

[0058] It is understandable that by controlling the third motor, the angle between the seat body 2 and the first link can be changed, thereby altering the shape of the entire second linkage mechanism 210 and achieving the effect of adjusting the height of the seat body 2 or moving the seat body 2 forward or backward. In this document, unless otherwise specified, the third motor is positioned at the fourth pivot 214 as a specific illustrative example. Those skilled in the art will understand that technical solutions for positioning the third motor at other pivots or for setting multiple third motors at multiple pivots can be derived by calculating the angles at various positions; these solutions will not be elaborated upon here.

[0059] The second linkage mechanism 210 may further include a fourth motor for controlling the third link 217. The fourth motor may be located at the sixth pivot 216 or the seventh pivot 218 (understandably, the fourth motor is not located at the same pivot as the third motor), thereby controlling the angle of the third link 217 relative to the base. The fourth motor can be used to control the front end of the seat cushion body 2, allowing the seat cushion body 2 to tilt towards the seat backrest 3, thereby adjusting the seat assembly to a preset zero-pressure state (specific implementations include...). Figure 12 , 13 (As shown, this will be described in detail later). In this document, unless otherwise specified, the fourth motor is located at the seventh pivot 218 as a specific illustrative example. Those skilled in the art will understand that technical solutions for placing the fourth motor at other pivots or for setting multiple fourth motors at multiple pivots can be derived by calculating the angles at various positions; these will not be elaborated upon here. It is understood that when the seat assembly is not in the zero-pressure position or has not moved towards the zero-pressure position, the angle of the third link 217 can be kept constant so that the relative position of the sixth pivot 216 relative to the base does not change, thereby simplifying the movement process.

[0060] Understandably, when the third and fourth motors are not working, the second linkage mechanism 210 can be locked, preventing the seat cushion 2 from moving.

[0061] In some embodiments, such as Figure 4 and Figure 5 As shown, the second linkage mechanism 210 may also exclude the third link 217. In this case, the link 212 can be directly assembled onto the base via the sixth pivot 216 and can pivot relative to the base. It is easy to understand that embodiments without the third link 217 do not involve movement at the zero-pressure position.

[0062] In some embodiments, such as Figure 6 and Figure 7 As shown, the backrest rocker arm 311 in the first linkage mechanism 310 can be composed of two rocker arm branches 311-1 and 311-2, two rocker arm pivoting parts 311-3 and 311-4, and a rocker arm linkage part 314. Correspondingly, the second pivoting part 313 can also be composed of two second pivoting parts 313-1 and 313-2. One end of the two rocker arm branches 311-1 and 311-2 can be assembled on the base through the two second pivoting parts 313-1 and 313-2 respectively, and can pivot relative to the base. The other end of the two rocker arm branches 311-1 and 311-2 can be connected to the two rocker arm pivoting parts 312-1 and 312-2 respectively, and can pivot relative to them. The rocker arm linkage part 314 can be composed of three links forming a triangle, and the three vertices of the triangle are pivotally connected to the first pivoting part 315 and the two rocker arm pivoting parts 311-3 and 311-4 respectively. It is understandable that this triangular structure helps to improve the lateral rigidity of the backrest, transmit the adjustment driving force, make the force on the backrest body 3 evenly distributed, and improve the motion accuracy and stability of the rocker arm and its pivot.

[0063] It is understandable that the rocker arm linkage 314 can also be constructed as a quadrilateral, pentagon, or other polygonal or other shapes. The second linkage mechanism 210 can be as follows: Figure 7 As shown Figure 5 The embodiments are the same, and can also be the same as those. Figure 3 The embodiments are the same and will not be described in detail here. The second motor can be located in any one or more of the two rocker arm pivots 311-3 and 311-4, or the two second pivots 313-1 and 313-2. Those skilled in the art will understand that the technical solution for setting the second motor in each position can be obtained by converting the angle of each position, and will not be described in detail here.

[0064] In some embodiments, such as Figure 2 and Figure 3The seat assembly shown can be in the designed position. Generally speaking, the designed position refers to the reference geometric position preset during the structural design of the seat assembly, which is the initial reference origin for all adjustment movements of the seat assembly. As shown in the figure, in the designed position, the seat back 3 is at a predetermined angle relative to the seat cushion 2 to support the occupant.

[0065] Generally, the high-adjustment position is used to describe the highest adjustable position of the seat assembly in the vertical direction, that is, the upper limit geometric point of the seat assembly height adjustment range. In some embodiments, since the seat back 3 can form a predetermined angle relative to the seat cushion 2 and support the occupant at different seat cushion heights, thus achieving the same effect as the reference geometric position, it can be used as the starting point for the height adjustment process. That is, the height adjustment of the seat assembly refers to starting from the starting position until another position within the height adjustment range.

[0066] like Figure 8 and Figure 9 As shown, in order to move the seat assembly to the target position for height adjustment, the seat cushion 2 changes in height relative to the designed position. The first motor and the second motor can be used to control the movement of the seat back 3, and the third motor can be used to control the movement of the seat cushion 2, so that the seat assembly moves to the target position.

[0067] In some embodiments, the seat assembly can be in a reclined position, which is typically used to describe the maximum limit of the seat back's rearward adjustment, i.e., the extreme recline point of the backrest's angle adjustment range. For example... Figure 10 and Figure 11 As shown, in the reclining position, the seat back 3 and seat cushion 2 form a predetermined angle to reach the maximum rearward adjustment position, allowing the occupant to lie down on the seat assembly. The seat back 3 can be moved using a first motor and a second motor, and the seat cushion 2 can be moved using a third motor, thus moving the seat assembly to the reclining position. It is understood that the predetermined angle of the reclining position allows the seat back to unfold backward until it is substantially flush with the seat cushion, and this angle value may be set differently depending on the actual physical dimensions of the seat assembly.

[0068] In some embodiments, the seat assembly can be in a zero-pressure position. The zero-pressure position primarily describes the comfortable posture points of the seat assembly, which rely on ergonomic adjustments to the backrest and seat cushion to simulate the weightlessness of space. This allows for intelligent adjustment functions such as evenly distributing pressure on the body and reducing lumbar load. Figure 12 and Figure 13As shown, in the zero-pressure position, the seat assembly is adjusted to a preset zero-pressure state, wherein the seat cushion 2 and seat back 3 are adjusted to a predetermined angle and relative position, and the footrest 4 of the seat cushion 2 extends and is in a predetermined position. At this time, the first and second motors control the movement of the seat back 3, and the third and fourth motors control the movement of the seat cushion 2, so that the seat assembly moves to the zero-pressure position. It can be understood that the footrest 4 can be controlled by a separate motor, or it can be linked and controlled by a motor such as the fourth motor when connected to the second linkage mechanism.

[0069] In some embodiments, the seat assembly can be in an easy-to-enter (EZE) position. The easy-to-enter position primarily describes the extreme adjustment position where the seat automatically moves forward and the backrest tilts forward, maximizing the space for rear passengers to get in and out of the vehicle. For example... Figure 14 and Figure 15 As shown, in the convenient access position, the seat assembly moves in a preset manner to increase the space behind the seat assembly. The first motor and the second motor can be used to control the movement of the seat back 3, and the third motor can be used to control the movement of the seat cushion 2, so that the seat assembly moves to the convenient access position.

[0070] Back Figure 1 The first, second, and third current angles obtained in step S110 can be directly obtained from the current working states of the corresponding first, second, and third motors, or they can be read from external storage media or memory, corresponding to preset angles of the current positions of the seat back 3 and seat cushion 2. The first, second, and third target angles obtained can be read from the aforementioned storage media, corresponding to preset angles of the target positions of the seat back 3 and seat cushion 2, or they can be obtained by predicting or setting the target position according to input instructions. The current angle and target angle can be the angle between the two structures connected by the pivot, or they can be the relative angle within the preset working range of the pivot. For example, in the case where the design can only rotate outward by a maximum of 55° from the retracted position, the angle of the retracted position can be defined as 0% and the outward rotation of 55° can be defined as 100%, thereby changing the actual angle to a percentage angle to facilitate position estimation. In some embodiments, the basic parameters of the seat assembly may also include the fourth current angle and fourth target angle of the third link 217 relative to the base, obtained in a similar manner.

[0071] In some embodiments, the third triangular velocity of the seat cushion movement controlled by the third motor can be directly read from an external storage medium or memory based on the third current angle and the third target angle. Alternatively, the third triangular velocity of the seat cushion movement controlled by the third motor can be obtained directly through other means, such as measuring the third angular velocity using an angular velocity sensor or converting it by manually controlling the movement of the seat cushion. No further limitations are imposed here. Similarly, the second angular velocity of the backrest rocker arm movement can be determined based on the second current angle and the second target angle, and the first angular velocity of the backrest body movement can be determined based on the first current angle and the first target angle. Further details are omitted here.

[0072] In step S130, at least one remaining angular velocity among the first, second, and third angular velocities can be determined based on at least one of the first, second, and third angular velocities, as well as the first current angle, second current angle, third current angle, first target angle, second target angle, and third target angle. For example, taking the third angular velocity and basic parameters to determine the first and second angular velocities as an example, the first and second angular velocities can be linearly correlated according to a proportional coefficient and a compensation amount, with the third angular velocity as a reference. Specifically, the relative positions between the outer coverings of the seat back and seat cushion at multiple locations during the process of moving from the current angle to the target angle can be determined by simulation or actual measurement, thereby determining the first and second angular velocities that keep the seat cushion and seat back without interference or gaps during the movement. In some embodiments, the simulation or measurement results at multiple locations in the aforementioned process can also be interpolated using a preset mathematical model to obtain the relative positions between the seat back and seat cushion throughout the continuous process, thereby determining the angular velocities required to maintain no interference or gaps.

[0073] In some embodiments, the fourth angular velocity of the third link 217 controlled by the fourth motor can also be determined in a similar manner, so that the seat cushion 2 and the seat back 3 remain free from interference or gaps during movement. Since the third link 217 controlled by the fourth motor is relatively independent, it may not need to be set in association with the angular velocities of other motors.

[0074] In some embodiments, the relative change of the seat cushion 2 is generally small during the adjustment of the seat assembly. Therefore, the movement of the seat cushion 2 can be used as a reference for the backrest body 3 and the backrest rocker arm 311, thereby helping to keep the entire adjustment process as smooth as possible and improving user comfort. In some embodiments, the required angular velocity of each motor can also be determined by means such as PID control, so that the rotational speed of the backrest body 3 and the backrest rocker arm 311 can be adjusted to follow the movement of the seat cushion 2, thereby reaching the target position synchronously with the seat cushion 2.

[0075] In step S140, the corresponding motors can be controlled to operate based on the first angular velocity, the second angular velocity, and the third angular velocity obtained in step S130, causing the seat back and seat cushion to undergo a preset movement. Additionally, in some embodiments, a fourth motor can also be controlled to operate based on a fourth angular velocity in a similar manner.

[0076] For ease of explanation, the following description will use the relative angle within the preset working range as the angular basis for explanation. It can be understood that the actual angle range corresponding to the relative angle can be adjusted accordingly based on the actual adjustable range of the seat components.

[0077] In some embodiments, in the seat assembly at the design position (e.g., the reference geometric position), the relative angle of the third motor corresponding to the seat cushion body 2 is 13.83%, the relative angle of the second motor corresponding to the backrest rocker arm 311 is 49.84%, and the relative angle of the first motor corresponding to the backrest body 3 is 40.49%.

[0078] In some embodiments, the seat assembly can be configured to move from a first position to a second position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position, and the first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position, wherein the height of the seat cushion in the second position is higher than its height in the first position.

[0079] In some embodiments, during the height adjustment process of the seat assembly, from the lowest to the highest position of the seat cushion, the relative angle range of the third motor corresponding to the seat cushion body 2 can be from 0.11% to 29.62%, the relative angle range of the second motor corresponding to the backrest rocker arm 311 can be from 16.49% to 92.51%, and the relative angle range of the first motor corresponding to the backrest body 3 can be from 44.53% to 34.21%, while maintaining no interference or gap. Specifically, during the process of adjusting the seat cushion from its lowest to its highest position, the actual angle between the seat cushion body 2 and the connecting rod 211 can increase by 44.9° (it can be understood that as the angle increases, the seat cushion body 2 is restricted by the mechanical structure and rises and moves forward of the seat), the actual angle between the backrest rocker arm 311 and the ground can increase by 20.8° (it can be understood that as the angle increases, the backrest rocker arm 311 moves forward of the seat), and the actual angle between the backrest body 3 and the backrest rocker arm 311 can increase by 16.8° (it can be understood that as the angle increases, the backrest body 3 moves backward of the seat relative to the backrest rocker arm 311).

[0080] In some embodiments, during the height adjustment process, the relative angle range of the first motor, second motor, and third motor of the seat assembly can correspond proportionally within the range of the seat cushion being adjusted from its lowest to its highest position. That is, the aforementioned angle ranges of the first motor, second motor, and third motor can be defined by the same number of intervals, so that the first motor, second motor, and third motor move at a uniform speed in each interval while maintaining no interference or gaps, as shown in Table 1 below, where time 21 corresponds to the relative angle of each part of the seat assembly when it is in the reference geometric position.

[0081] Table 1: Relative Angle Ranges and Correspondences of the First, Second, and Third Motors

[0082] In some embodiments, during height adjustment, the backrest body 3 and the seat cushion body 2 are configured to start and stop moving simultaneously, meaning the first motor, the second motor, and the third motor can operate synchronously within the linkage movement time. The motor speed (RPM) can be determined using the formula ΔS×60 / (P×2×Δt), where ΔS is the Hall count (distance) from the current position to the target position, P is the number of pole pairs, and Δt is the running time.

[0083] During the height adjustment process, starting from the first position and ending at the second position, at least one additional angular velocity among the three angular velocities can be determined based on at least one of the first angular velocity of the backrest body 3 (corresponding to the first motor), the second angular velocity of the backrest rocker arm 311 (corresponding to the second motor), and the third angular velocity of the seat cushion 2 (corresponding to the third motor). In a non-limiting embodiment, since the range of motion of the seat cushion 2 is relatively small and the movement process is relatively stable compared to the backrest, the operating parameters of the third motor, which is mainly used to adjust the seat cushion 2, are selected as the calculation basis for the control method. That is, the rotational speeds of the first and second motors can be determined based on the rotational speed of the third motor, the number of pole pairs, and the parameters of the connected gearbox and other structures. For example, if the rotational speed of the third motor is RPM=1050, then the determined rotational speed of the first motor can be RPM=900, and the rotational speed of the second motor can be RPM=1850, so that the three motors reach the target position in the same amount of time. Alternatively, the rotational speeds of the first and / or second motors can be obtained first, and then the rotational speed of the third motor can be determined based on the rotational speeds of the first and / or second motors.

[0084] In some embodiments, such as Figure 8 As shown, to increase the coordination between the backrest, rocker arm, and seat cushion during height adjustment, the included angle β between the seat backrest 3 and the seat cushion 2 can be measured. During the movement of the seat assembly, the absolute value of the maximum change in β can be kept less than or equal to a first threshold (e.g., the first threshold can be 1°) so that the seat angle remains essentially constant throughout the height adjustment process. This helps to ensure that there are no gaps or compression between the seat backrest and the seat cushion during the entire adjustment process, thereby improving the passenger's riding experience.

[0085] In some embodiments, the change in angle β of the seat cushion body 2 (i.e., the angle between the seat cushion body 2 and the connecting rod 211) during each unit angle change can be less than or equal to a second threshold (e.g., the unit angle can be 1°, and the second threshold can be 0.5°), thereby improving the stability of the seat assembly during movement and enhancing the passenger's riding experience. In some embodiments, a set of reference points M1 and M2 can be selected on the seat back 3 and seat cushion 2, with M1 located on the seat back 3 and M2 located on the seat cushion 2, and the relative distance X between M1 and M2 in the horizontal plane and the relative distance Z in the vertical plane can be measured. During the movement of the seat assembly, the variation range of X can be maintained within a first preset range (e.g., between 0mm and 4mm), and the variation range of Z can be maintained within a second preset range (e.g., between -2mm and 5mm); and during each unit angle change of the angle corresponding to the seat cushion body 2, the absolute values ​​of the changes in X and Z are both less than a third threshold (e.g., set to 1mm), to further improve the stability of the seat assembly during movement. In some embodiments, the change in β can be optimized with the highest first priority. Provided that β meets the aforementioned requirements, the change in X can be optimized with the second highest priority. Provided that both β and X meet the aforementioned requirements, the change in Z can be optimized with the lowest third priority to obtain a suitable movement process and its control parameters.

[0086] In some embodiments, the seat assembly can be configured to move from a second position to a first position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position. It is understood that since the first motor, the second motor, and the third motor can all move at a constant speed without interference or gaps throughout the entire variable range of height adjustment, moving from the second position to the first position (i.e., height reduction) can be obtained by reversing the above-described embodiment of moving from the first position to the second position, and will not be elaborated upon here.

[0087] In some embodiments, the seat assembly is configured to move dynamically between a first position and a second position, for example, by manual control, such that the height of the seat cushion in the second position differs from its height in the first position. The first current angle, the second current angle, and the third current angle can be the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly before the start of dynamic control, and the first target angle, the second target angle, and the third target angle can be the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly after the completion of dynamic control.

[0088] Specifically, the motor speed (RPM) can be determined using the formula ΔS×60 / (P×2×Δt)+D, where D is the compensation amount for dynamic control. For example, the angle that the backrest body 3 and backrest rocker arm 311 should be at during control can be determined based on the angle corresponding to the seat cushion body 2 during dynamic control (e.g., according to the row in Table 1), and the required compensation amount D can be determined based on the actual angle of the backrest body 3 and backrest rocker arm 311 during control, so that the backrest body 3 and backrest rocker arm 311 can arrive at the position after dynamic control is completed at the same time as the seat cushion body 2.

[0089] Alternatively, the angle at which the seat cushion body 2 should be positioned can be determined based on the angles corresponding to the backrest body 3 and / or the backrest rocker arm 311, and the required compensation amount can be determined in a similar manner. For example, in a non-limiting embodiment, when the angle at which the seat cushion body 2 should be positioned is determined based on the angles corresponding to the backrest body 3 and the backrest rocker arm 311, a comprehensive calculation can be performed based on the data from the respective rows of the backrest body 3 and the backrest rocker arm 311 in Table 1 to determine the angle at which the seat cushion body 2 should be positioned, thereby determining the required compensation amount D; or the angle corresponding to only one of the backrest body 3 or the backrest rocker arm 311 can be used as the basis for calculation without limitation. Furthermore, in dynamic control, the coordination between the backrest, rocker arm, and seat cushion can also be optimized based on β, X, and Z of the aforementioned embodiments, which will not be elaborated here.

[0090] In some embodiments, the speeds of the first and second motors can be linearly correlated with the speed A of the third motor of the seat cushion body 2. Specifically, the speed of the first motor can be K1×A+D1, and the speed of the second motor can be K2×A+D2, where K1 and K2 are proportional coefficients related to motor parameters such as the number of pole pairs and the gearbox, and D1 and D2 are compensation amounts determined based on the angles shown in Table 1 combined with the proportional coefficients, so that the backrest body 3 and the backrest rocker arm 311 can reach the target position at the same time as the seat cushion body 2. Similarly, the speeds of the other two motors can be determined using a similar formula based on the motor speeds of the backrest body 3 or the backrest rocker arm 311, without limitation.

[0091] In some embodiments, the seat assembly can be configured to move from a designed position to a reclining position. In the reclining position, the relative angle between the third motor corresponding to the seat cushion body 2 and the seat assembly is 30.99%, the relative angle between the second motor corresponding to the backrest rocker arm 311 and the backrest body 3 is 0.00%, and the relative angle between the first motor corresponding to the backrest body 3 and the backrest body 3 is 6.13%. To avoid interference between the backrest body 3 and the seat cushion body 2 during movement, the backrest body 3 may typically first move upwards in a direction similar to an upward movement to allow sufficient space for the movement of the seat cushion body 2, and then the two parts move separately in an unfolding direction. That is, the movement process of the seat assembly may include a first stage and a second stage, with the second stage corresponding to the linkage movement time.

[0092] Specifically, the direction of movement of the seat back from the designed position to the reclining position can be taken as the first direction. During the first stage, a second reverse angular velocity can be determined, in the opposite direction to the first direction, for the backrest rocker arm. The first, second, and third motors can be controlled based on the first, second, and third angular velocities respectively, until the seat back moves to the first position. The first position can be set so that the movement of the seat back does not interfere with the movement of the seat cushion during the second stage. Specifically, the speed of the first motor can be 4000 RPM, the speed of the second motor can be 2500 RPM, and the speed of the third motor can be 3000 RPM. In the first stage, the angle of the first motor can move from 40.49% to 35.58% (for example, the actual angle between the backrest body 3 and the backrest rocker arm 311 increases by 7.5°), the angle of the second motor can move from 49.80% to 78.96% (for example, the actual angle between the backrest rocker arm 311 and the ground can increase by 8°), and the angle of the third motor can move from 13.83% to 22.07% (for example, the actual angle between the seat cushion body 2 and the connecting rod 211 can increase by 12.5°).

[0093] Furthermore, in the second stage, the direction of the second angular velocity can be the first direction, and the operation of the first, second, and third motors can be controlled based on the first, second, and third angular velocities. Specifically, in a non-limiting embodiment, the first, second, and third angular velocities can be numerically consistent with those in the first stage. In the second stage, the angle of the first motor can move from 35.58% to 6.13% (e.g., the actual angle between the backrest body 3 and the backrest rocker arm 311 increases by 48.5°), the angle of the second motor can move from 78.96% to 0.00% (e.g., the actual angle between the backrest rocker arm 311 and the ground decreases by 21.6°), and the angle of the third motor can move from 22.07% to 30.99% (e.g., the actual angle between the seat cushion body 2 and the connecting rod 211 increases by 13.6°).

[0094] In some embodiments, during the first stage, apart from controlling the second motor to operate according to the second reverse angular velocity until the seat back moves to the first position, the operating state of the first motor and / or the third motor is not restricted. That is, the first motor and / or the third motor may not operate or may not operate at an angular velocity set in a linear relationship. It is understood that the second reverse angular velocity is mainly used to prevent interference between the seat back and the seat cushion, and its value may be the same as or different from the second angular velocity. Therefore, the duration of the first stage is not limited.

[0095] It is understandable that the starting point of the seat unfolding process can be any sitting position at any height or a convenient entry position, and is not limited to starting from the designed position. If there is no interference between the seat back and seat cushion at the starting position, the movement of the seat components can skip the first stage and directly enter the second stage corresponding to the linkage movement time to achieve the corresponding adjustment process.

[0096] In some embodiments, the seat assembly may be configured to move from a reclining position to a designed position. The movement of the seat assembly may include a first stage and a second stage, the second stage corresponding to the linkage movement time.

[0097] Additionally, in some embodiments, the movement of the seat assembly may include a third stage, which can be specifically used for further adjustment and movement of the backrest rocker arm and the seat cushion body. That is, in the third stage, the second and third motors can continue to operate independently after the joint movement time has ended until the target position is reached. The angular velocity magnitude and running time of the two motors in this stage can be determined individually according to the target position, and are not limited herein.

[0098] In the first stage, the first motor can be controlled independently based on a first independent angular velocity until the seat backrest moves to a first position. This first position can be set so that the movement of the seat backrest does not interfere with the movement of the seat cushion in the second stage. Specifically, the speed of the first motor can be 4000 RPM. In the first stage, the angle of the first motor can move from 6.13% to 21.47% (for example, the actual angle between the backrest body 3 and the backrest rocker arm 311 decreases by 35°).

[0099] In the second stage, the operation of the first, second, and third motors can be controlled based on the first, second, and third angular velocities. Specifically, the first angular velocity can be the same as in the first stage, the speed of the second motor can be 2500 RPM, and the speed of the third motor can be 3000 RPM. In the second stage, the angle of the first motor can move from 21.47% to 40.49% (e.g., the actual angle between the backrest body 3 and the backrest rocker arm 311 decreases by 21°), the angle of the second motor can move from 0.00% to 49.80% (e.g., the actual angle between the backrest rocker arm 311 and the ground can increase by 13.6°), and the angle of the third motor can move from 30.99% to 13.83% (e.g., the actual angle between the seat cushion body 2 and the connecting rod 211 decreases by 26.1°). When the second motor stops working, the angle of the third motor can move from 30.99% to 22.76%, and can continue to move to 13.83% after the second motor stops working.

[0100] It is understandable that the endpoint of the process of retracting the seat from the reclined position can be any sitting position at any height or a convenient access position, and is not limited to the designed position. Provided that there is no interference between the seat back and seat cushion at the endpoint of the movement, the movement of the seat components can skip the first stage and directly enter the second stage corresponding to the linkage movement time to achieve the corresponding adjustment process.

[0101] In some embodiments, the seat assembly can be configured to move from a designed position to a zero-pressure position. In the designed position, the relative angle of the fourth motor corresponding to the third link 217 is 0.00%. In the zero-pressure position, the relative angle of the third motor corresponding to the seat cushion body 2 is 28.93%, the relative angle of the second motor corresponding to the backrest rocker arm 311 is 42.56%, the relative angle of the first motor corresponding to the backrest body 3 is 20.25%, and the relative angle of the fourth motor corresponding to the third link 217 is 100.00%. The movement of the seat assembly can include a first stage and a second stage, with the linkage movement time corresponding to the sum of the times of the first and second stages.

[0102] In the first stage, the first, second, and fourth motors can be controlled to operate based on the first, second, and fourth angular velocities until the seat backrest moves to a first position. This first position can be set so that the movement of the seat backrest does not interfere with the movement of the seat cushion in the second stage. Specifically, the speed of the first motor can be 1900 RPM, the speed of the second motor can be 1000 RPM, and the speed of the fourth motor can be 3300 RPM. In the first stage, the angle of the first motor can move from 40.49% to 37.42% (e.g., the actual angle between the backrest body 3 and the backrest rocker arm 311 increases by 5°), the angle of the second motor can move from 49.84% to 42.56% (e.g., the actual angle between the backrest rocker arm 311 and the ground decreases by 2°), and the angle of the fourth motor can move from 0.00% to 45.92% (e.g., the actual angle between the third link 217 and the ground increases by 45.5°).

[0103] In the second stage, the operation of the first, third, and fourth motors can be controlled based on the first, third, and fourth angular velocities. Specifically, the first and fourth angular velocities can be the same as in the first stage, the speed of the third motor can be 1000 RPM, and in the second stage, the angle of the first motor can move from 37.42% to 20.25% (for example, the actual angle between the backrest body 3 and the backrest rocker arm 311 increases by 28°), the angle of the third motor can move from 13.83% to 28.93% (for example, the actual angle between the seat cushion body 2 and the connecting rod 211 can increase by 23°), and the angle of the fourth motor can move from 45.92% to 100.00% (for example, the actual angle between the third connecting rod 217 and the ground can increase by 55°).

[0104] In some embodiments, since the fourth motor can operate relatively independently, the fourth angular velocity can also be set separately. For example, its magnitude can be linearly related to the third angular velocity, or it can be unrelated. Alternatively, the magnitude of the fourth angular velocity can be set in more stages, or it can remain constant throughout the entire operating time. That is, the operation of the fourth motor can be customized according to the movement requirements of the seat assembly, without any limitations.

[0105] It is understandable that the starting point of the zero-pressure deployment process can be any seated position at any height or a convenient entry position, and is not limited to starting from the designed position. If there is no interference between the seat back and cushion at the starting position, the movement process can consist of only one stage, during which the first, second, third, and fourth motors can be controlled simultaneously to achieve the corresponding adjustment process.

[0106] In some embodiments, the seat assembly may be configured to move from a zero-pressure position to a designed position. The movement of the seat assembly may include a first stage and a second stage, with the combined movement time corresponding to the sum of the times of the first and second stages.

[0107] In the first stage, the first, third, and fourth motors can be controlled to operate based on the first, third, and fourth angular velocities until the seat cushion moves to a first position. This first position can be set so that the movement of the seat cushion does not interfere with the movement of the seat back during the second stage. Specifically, the speed of the first motor can be 1900 RPM, the speed of the third motor can be 1000 RPM, and the speed of the fourth motor can be 3300 RPM. In the first stage, the angle of the first motor can move from 20.25% to 37.42% (e.g., the actual angle between the backrest body 3 and the backrest rocker arm 311 decreases by 28°), the angle of the third motor can move from 28.93% to 13.83% (e.g., the actual angle between the seat cushion body 2 and the connecting rod 211 decreases by 23°), and the angle of the fourth motor can move from 100.00% to 45.29% (e.g., the actual angle between the third connecting rod 217 and the ground decreases by 55°).

[0108] In the second stage, the operation of the first, second, and fourth motors can be controlled based on the first, second, and fourth angular velocities. Specifically, the first and fourth angular velocities can be the same as in the first stage, the rotational speed of the second motor can be 1000 RPM, and in the second stage, the angle of the first motor can move from 37.42% to 40.49% (for example, the actual angle between the backrest body 3 and the backrest rocker arm 311 decreases by 5°), the angle of the second motor can move from 42.56% to 49.84% (for example, the actual angle between the backrest rocker arm 311 and the ground can increase by 2°), and the angle of the fourth motor can move from 45.29% to 0.00% (for example, the actual angle between the third link 217 and the ground can decrease by 45.5°).

[0109] Similarly, in some embodiments, since the fourth motor can operate relatively independently, the fourth angular velocity can also be set separately, for example, its value is not linearly related to the third angular velocity, it can be divided into more stages of operation, or it can remain unchanged during the operation time, etc., without any limitations.

[0110] It is understandable that the design position of the endpoint of the zero-pressure retraction process can be any seated position at any height, or a convenient entry position, and is not limited to the design position. If there is no interference between the seat back and seat cushion at the endpoint, the movement process can also consist of only one stage, during which the first, second, third, and fourth motors can be controlled simultaneously to achieve the corresponding adjustment process.

[0111] In some embodiments, the seat assembly can be configured to move from a design position to an easy-access position. In the easy-access position, the relative angle between the third motor corresponding to the seat cushion body 2 and the seat assembly is 22.07%, the relative angle between the second motor corresponding to the backrest rocker arm 311 and the backrest body 3 is 49.84%, and the relative angle between the first motor corresponding to the backrest body 3 and the seat assembly is 58.90%.

[0112] The operation of the first, second, and third motors can be controlled based on the first, second, and third angular velocities. Specifically, the speed of the first motor can be 3300 RPM, the speed of the second motor can be 700 RPM, and the speed of the third motor can be 2000 RPM. In the first stage, the angle of the first motor can move from 40.49% to 58.90% (e.g., the actual angle between the backrest body 3 and the backrest rocker arm 311 decreases by 30°), the angle of the second motor can move from 49.84% to 100.00% (e.g., the actual angle between the backrest rocker arm 311 and the ground can increase by 13.7°), and the angle of the third motor can move from 13.83% to 22.07% (e.g., the actual angle between the seat cushion body 2 and the connecting rod 211 can increase by 12.5°).

[0113] In some embodiments, the seating assembly may be configured to move from an easy access position to a design position.

[0114] The operation of the first, second, and third motors can be controlled based on the first, second, and third angular velocities. Specifically, the speed of the first motor can be 3300 RPM, the speed of the second motor can be 700 RPM, and the speed of the third motor can be 2000 RPM. In the first stage, the angle of the first motor can move from 58.90% to 40.49% (for example, the actual angle between the backrest body 3 and the backrest rocker arm 311 increases by 30°), the angle of the second motor can move from 100.00% to 49.84% (for example, the actual angle between the backrest rocker arm 311 and the ground can decrease by 13.7°), and the angle of the third motor can move from 22.07% to 13.83% (for example, the actual angle between the seat cushion body 2 and the connecting rod 211 can decrease by 12.5°).

[0115] According to the control method for seat components disclosed herein, the relative movement positions and relationships of the backrest body, backrest rocker arm, and seat cushion body can be controlled, and the movement process of switching between different positions can be determined, thereby maintaining the effect of no interference or gap between the seat cushion and the seat back during the movement, improving the safety of seat movement, and improving the comfort of passengers adjusting the seat.

[0116] like Figure 16 As shown, this disclosure also provides a control method 200 for a seat assembly. The control method 200 may include: step S210, acquiring basic parameters of the seat assembly, including a first current angle and a first target angle of the backrest body relative to the backrest rocker arm, a second current angle and a second target angle of the backrest rocker arm relative to the base, and a third current angle and a third target angle of the seat cushion body relative to the first link; step S230, setting a linear correlation between the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement according to the basic parameters of the seat assembly and a proportional coefficient combined with a compensation amount; step S240, controlling the operation of a first motor according to the first angular velocity, controlling the operation of a second motor according to the second angular velocity, and controlling the operation of a third motor according to the third angular velocity during the linkage movement time of the seat assembly.

[0117] In step S230, the rotational speeds of the first, second, and third motors can be directly set based on the basic parameters of the seat assembly, using a proportional coefficient combined with a compensation amount, so that the backrest body 3, backrest rocker arm 311, and seat cushion body 2 arrive at their respective target positions at the same time. It is understood that the setting process in step S230 can be obtained by referring to the process determined in step S130 of the aforementioned embodiment.

[0118] This disclosure also provides a seat, including a seat assembly comprising a seat back and a seat cushion, wherein the seat back and seat cushion are movable independently. Specifically, in Figures 2 to 7 In the illustrated seat assembly, the seat back may include a backrest rocker arm rotatable relative to a base and a backrest body connected to and pivotable relative to the backrest rocker arm; the seat cushion may include a seat cushion body and a first link connected to and pivotable relative to the seat cushion body; the seat back may include a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm; the seat cushion may include a third motor for controlling the relative movement between the seat cushion body and the first link. As in the foregoing embodiments, the seat assembly can be controlled according to the control method described in any of the foregoing embodiments.

[0119] This disclosure also provides a cockpit, which includes a base and a seat according to the foregoing embodiments, wherein the seat is disposed on the base and the seat can be adjusted to move and change state relative to the base according to the control method in the foregoing embodiments.

[0120] The foregoing has described one or more exemplary embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0121] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or physical entities, or by products with certain functions. A typical implementation device is a server system. Of course, this disclosure does not exclude the possibility that, with the future development of computer technology, the computer implementing the functions of the above embodiments may be, for example, a personal computer, a laptop computer, an in-vehicle human-machine interaction device, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a game console, a tablet computer, a wearable device, or any combination thereof.

[0122] The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, product, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, product, or apparatus. Without further limitation, the presence of other identical or equivalent elements in the process, method, product, or apparatus that includes said elements is not excluded. For example, the use of terms such as "first" or "second" to denote names does not indicate any particular order.

[0123] For ease of description, the above devices are described in terms of function, divided into various modules. Of course, when implementing one or more embodiments of this disclosure, the functions of each module can be implemented in one or more software and / or hardware, or a module that performs the same function can be implemented by a combination of multiple sub-modules or sub-units. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0124] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0125] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0126] Those skilled in the art will understand that one or more embodiments of this disclosure may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, one or more embodiments of this disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0127] One or more embodiments of this disclosure can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a particular task or implement a particular abstract data type. One or more embodiments of this disclosure can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In a distributed computing environment, program modules can reside in local and remote computer storage media, including storage devices.

[0128] The same or similar parts between the various embodiments of this disclosure can be referred to mutually, and each embodiment focuses on describing the differences from other embodiments. In particular, for the apparatus embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and relevant parts can be referred to the description of the method embodiments. In the description of this disclosure, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," "exemplary," etc., means that the specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this disclosure. In this disclosure, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this disclosure and the features of different embodiments or examples.

[0129] Additionally, when used in this disclosure, the terms “here,” “above,” “below,” “below,” “in the following,” “overall,” and similar terms should refer to the entirety of this disclosure and not any particular part thereof. Furthermore, unless expressly stated otherwise or otherwise understood in the context in which they are used, conditional language used herein, such as “may,” “possibly,” “for example,” “like,” etc., is generally intended to express that certain embodiments include, while other embodiments do not, certain features, elements, and / or states. Therefore, such conditional language is not generally intended to imply that one or more embodiments require features, elements, and / or states in any way, or whether such features, elements, and / or states are included or performed in any particular embodiment.

[0130] The above description is merely an embodiment of one or more embodiments of this disclosure and is not intended to limit the scope of the one or more embodiments of this disclosure. Various modifications and variations can be made to the one or more embodiments of this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of the claims.

Claims

1. A control method for a seat assembly, characterized in that, The seat assembly includes a seat back and a seat cushion, wherein the seat back and the seat cushion are movable independently. The seat back includes a backrest rocker arm rotatable relative to the base and a backrest body connected to and pivotable relative to the backrest rocker arm; the seat cushion includes a cushion body and a first link connected to and pivotable relative to the cushion body. The seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm; the seat cushion includes a third motor for controlling the relative movement between the seat cushion body and the first linkage. The control method includes: Obtain the basic parameters of the seat assembly, including the first current angle and the first target angle of the backrest body relative to the backrest rocker arm, the second current angle and the second target angle of the backrest rocker arm relative to the base, and the third current angle and the third target angle of the seat cushion body relative to the first link; Based on the aforementioned basic parameters, according to at least one of the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third angular velocity of the seat cushion movement, the other at least one angular velocity among the first angular velocity, the second angular velocity, and the third angular velocity is linearly associated with the first angular velocity, the second angular velocity, and the third angular velocity by means of a proportional coefficient and a compensation amount. During the linkage movement time of the seat assembly, the first motor is controlled to operate according to the first angular velocity, the second motor is controlled to operate according to the second angular velocity, and the third motor is controlled to operate according to the third angular velocity.

2. The control method according to claim 1, characterized in that, Based on at least one of the angular velocities of the backrest body movement, the backrest rocker arm movement, and the seat cushion movement, a linear correlation is established between the first angular velocity, the second angular velocity, and the third angular velocity, according to a proportional coefficient and a compensation amount, including: The first angular velocity and the second angular velocity are determined based on the third angular velocity and the basic parameters.

3. The control method according to claim 1, characterized in that, The control method further includes at least one of the following steps: The third angular velocity is determined based on the third current angle and the third target angle; The second angular velocity is determined based on the second current angle and the second target angle; or The first angular velocity is determined based on the first current angle and the first target angle.

4. The control method according to claim 1, characterized in that, The seat assembly is configured to move from a first position to a second position, wherein the seat cushion is at a higher height in the second position than it is at the first position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position. The control method includes controlling the proportional coefficient and the compensation amount to satisfy the condition that, during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

5. The control method according to claim 1, characterized in that, The seat assembly is configured to move from a second position to a first position, wherein the seat cushion is at a higher height in the second position than it is at the first position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the second position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the first position. The control method includes controlling the proportional coefficient and the compensation amount to satisfy the condition that, during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

6. The control method according to claim 1, characterized in that, The seat assembly is configured to move dynamically between a first position and a second position, wherein the height of the seat cushion in the second position differs from its height in the first position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly before the start of the dynamic control. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body of the seat assembly after the completion of the dynamic control. The control method includes controlling the proportional coefficient and the compensation amount to satisfy the condition that, during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold.

7. The control method according to any one of claims 4 to 6, characterized in that, The control method further includes controlling the proportional coefficient and the compensation amount to satisfy that: during each unit angle change of the angle corresponding to the seat cushion body, the absolute value of the change in the angle between the seat cushion and the seat back is less than or equal to a second threshold.

8. The control method according to claim 7, characterized in that, The control method further includes: A first reference point is selected on the seat back, and a second reference point is selected on the seat cushion, to determine the horizontal relative distance between the first reference point and the second reference point in the horizontal direction, and the vertical relative distance in the vertical direction; and The proportional coefficient and the compensation amount are controlled to satisfy the following: during the movement of the seat assembly, the range of change of the horizontal relative distance is within a first preset interval, the range of change of the vertical relative distance is within a second preset interval, and during each unit angle change of the angle corresponding to the seat body, the absolute value of the change in the range of change of the horizontal relative distance and the vertical relative distance is less than a third threshold.

9. The control method according to claim 1, characterized in that, The seat assembly is configured to move from a designed position to a reclining position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the reclining position, the seat back is at a predetermined angle relative to the seat cushion to reach its maximum rearward adjustment limit. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the designed position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the reclined position. The movement process of the seat assembly includes a first stage and a second stage, where the second stage corresponds to the linkage movement time. The control method includes: taking the direction of movement of the seat back from the designed position to the reclining position as the first direction, During the first stage, a second reverse angular velocity is determined in which the backrest rocker arm moves in the opposite direction to the first direction, and the second motor is controlled to operate according to the second reverse angular velocity until the seat backrest moves to the first position; and During the second stage, the first motor, the second motor, and the third motor are controlled to operate according to the first angular velocity, the second angular velocity, and the third angular velocity, respectively. The first position is set such that, during the second phase, the movement of the seat back does not interfere with the movement of the seat cushion.

10. The control method according to claim 1, characterized in that, The seat assembly is configured to move from a reclining position to a designed position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the reclining position, the seat back is at a predetermined angle relative to the seat cushion to reach the maximum rearward adjustment position. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the reclined position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the designed position. The movement process of the seat assembly includes a first stage and a second stage, where the second stage corresponds to the linkage movement time. The control method includes: During the first stage, the first motor is individually controlled to operate according to a first independent angular velocity until the seat backrest moves to the first position; and During the second stage, the first motor, the second motor, and the third motor are controlled to operate according to the first angular velocity, the second angular velocity, and the third angular velocity, respectively, until the backrest body, the backrest rocker arm, and the seat cushion body move to the designed position. The first position is set such that, during the second phase, the movement of the seat back does not interfere with the movement of the seat cushion.

11. The control method according to claim 1, characterized in that, The seat cushion also includes a second link and a third link. The second link is connected to the seat cushion body and is pivotable relative to it. One of the first and second links is located on the side of the seat cushion body closer to the seat back, and the other of the first and second links is located on the other side of the seat body away from the seat back. The first end of the third link is connected to a base and is pivotable relative to it. The first or second link away from the seat back is connected to the second end of the third link and is pivotable relative to the third link. The seat cushion also includes a fourth motor for controlling the third linkage. The seat assembly is configured to move from a designed position to a zero-pressure position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the zero-pressure position, the seat assembly is adjusted to a preset zero-pressure state. The control method further includes: The basic parameters also include the fourth current angle and the fourth target angle of the third link relative to the base; The fourth angular velocity, which controls the movement of the third link, is determined based on the third angular velocity and the basic parameters; and The fourth motor is controlled to operate based on the fourth angular velocity; Wherein, the first current angle, the second current angle, the third current angle, and the fourth current angle are the angles corresponding to the backrest body, the backrest rocker arm, the seat cushion body, and the third link when the seat assembly is in the designed position; the first target angle, the second target angle, the third target angle, and the fourth target angle are the angles corresponding to the backrest body, the backrest rocker arm, the seat cushion body, and the third link when the seat assembly is in the zero-pressure position; the movement process of the seat assembly includes a first stage and a second stage; the linkage movement time corresponds to the sum of the times of the first stage and the second stage. The control method includes: During the first stage, the first motor, the second motor, and the fourth motor are controlled to operate according to the first angular velocity, the second angular velocity, and the fourth angular velocity, respectively, until the seat backrest moves to the first position; and During the second stage, the first motor, the third motor, and the fourth motor are controlled to operate according to the first angular velocity, the third angular velocity, and the fourth angular velocity, respectively. The first position is set such that, during the second phase, the movement of the seat back does not interfere with the movement of the seat cushion.

12. The control method according to claim 1, characterized in that, The seat cushion also includes a second link and a third link. The second link is connected to the seat cushion body and is pivotable relative to it. One of the first and second links is located on the side of the seat cushion body closer to the seat back, and the other of the first and second links is located on the other side of the seat body away from the seat back. The first end of the third link is connected to a base and is pivotable relative to it. The first or second link away from the seat back is connected to the second end of the third link and is pivotable relative to the third link. The seat cushion also includes a fourth motor for controlling the third linkage. The seat assembly is configured to move from a zero-pressure position to a designed position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the zero-pressure position, the seat assembly is adjusted to a preset zero-pressure state. The control method further includes: The basic parameters also include the fourth current angle and the fourth target angle of the third link relative to the base; The fourth angular velocity, which controls the movement of the third link, is determined based on the third angular velocity and the basic parameters; and The fourth motor is controlled to operate based on the fourth angular velocity; Wherein, the first current angle, the second current angle, the third current angle, and the fourth current angle are the angles corresponding to the backrest body, the backrest rocker arm, the seat cushion body, and the third link when the seat assembly is in the zero-pressure position; the first target angle, the second target angle, the third target angle, and the fourth target angle are the angles corresponding to the backrest body, the backrest rocker arm, the seat cushion body, and the third link when the seat assembly is in the designed position; the movement process of the seat assembly includes a first stage and a second stage, and the linkage movement time corresponds to the sum of the times of the first stage and the second stage. The control method includes: During the first stage, the first motor, the third motor, and the fourth motor are controlled to operate according to the first angular velocity, the third angular velocity, and the fourth angular velocity, respectively, until the seat cushion moves to the first position; and During the second stage, the first motor, the second motor, and the fourth motor are controlled to operate according to the first angular velocity, the second angular velocity, and the fourth angular velocity, respectively. The first position is set such that, during the second phase, the movement of the seat cushion does not interfere with the movement of the seat back.

13. The control method according to claim 1, characterized in that, The seat assembly is configured to move from a designed position to an easy-access position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the easy-access position, the seat assembly undergoes a preset movement to increase the space behind the seat assembly. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the designed position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the convenient access position.

14. The control method according to claim 1, characterized in that, The seat assembly is configured to move from an easy-entry position to a designed position, wherein in the designed position, the seat back is at a predetermined angle relative to the seat cushion to support the occupant, and in the easy-entry position, the seat assembly undergoes a preset movement to increase the space behind the seat assembly. The first current angle, the second current angle, and the third current angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the convenient access position. The first target angle, the second target angle, and the third target angle are the angles corresponding to the backrest body, the backrest rocker arm, and the seat cushion body when the seat assembly is in the design position.

15. A method for controlling a seat assembly, characterized in that, The seat assembly includes a seat back and a seat cushion, wherein the seat back and the seat cushion are movable independently. The seat back includes a backrest rocker arm rotatable relative to the base and a backrest body connected to and pivotable relative to the backrest rocker arm; the seat cushion includes a cushion body and a first link connected to and pivotable relative to the cushion body. The seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm; the seat cushion includes a third motor for controlling the relative movement between the seat cushion body and the first linkage. The control method includes: Obtain the basic parameters of the seat assembly, which include the first current angle and the first target angle of the backrest body relative to the backrest rocker arm, the second current angle and the second target angle of the backrest rocker arm relative to the base, and the third current angle and the third target angle of the seat cushion body relative to the first link. Based on the basic parameters of the seat assembly, the first angular velocity of the backrest body movement, the second angular velocity of the backrest rocker arm movement, and the third triangular velocity of the seat cushion movement are linearly correlated and set according to the proportional coefficient and the compensation amount. During the linkage movement time of the seat assembly, the first motor is controlled to operate according to the first angular velocity, the second motor is controlled to operate according to the second angular velocity, and the third motor is controlled to operate according to the third angular velocity.

16. The control method according to claim 15, characterized in that, The control method further includes controlling the proportional coefficient and the compensation amount to satisfy that: during the movement of the seat assembly, the absolute value of the maximum change in the angle between the seat cushion and the seat back is less than or equal to a first threshold, and during each unit angle change of the angle corresponding to the seat cushion body, the absolute value of the change in the angle between the seat cushion and the seat back is less than or equal to a second threshold.

17. The control method according to claim 16, characterized in that, The control method further includes: A first reference point is selected on the seat back, and a second reference point is selected on the seat cushion, to determine the horizontal relative distance between the first reference point and the second reference point in the horizontal direction, and the vertical relative distance in the vertical direction; and The proportional coefficient and the compensation amount are controlled to satisfy the following: during the movement of the seat assembly, the range of change of the horizontal relative distance is within a first preset interval, the range of change of the vertical relative distance is within a second preset interval, and during each unit angle change of the angle corresponding to the seat body, the absolute value of the change in the range of change of the horizontal relative distance and the vertical relative distance is less than a third threshold.

18. A type of seat, characterized in that, The seat includes a seat assembly consisting of a seat back and a seat cushion, wherein the seat back and the seat cushion move independently, wherein: The seat back includes a backrest rocker arm that can rotate relative to the base and a backrest body connected to the backrest rocker arm and pivotable relative to it; the seat cushion includes a cushion body and a first link connected to the cushion body and pivotable relative to it. The seat back includes a first motor for controlling the backrest body and a second motor for controlling the backrest rocker arm, and the seat cushion includes a third motor for controlling the relative movement between the seat cushion body and the first linkage. The seat assembly can be controlled by the control method according to any one of claims 1 to 17.

19. A cockpit, characterized in that, The cockpit includes a base and a seat according to claim 18, wherein the seat is disposed on the base.

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