Vehicle seat with control system and control method
The control system adjusts the target adjustment speed of each electric drive unit of the vehicle seat, which solves the problems of unstable adjustment and the total current exceeding the limit, achieves a smooth and comfortable adjustment process, and reduces manufacturing cost and weight.
Patent Information
- Application Number
- CN202380073321.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-10-17
- Filing Date
- 2023-10-16
- Publication Date
- 2025-05-27
AI Technical Summary
During the adjustment process of vehicle seats, due to the different adjustment time of each electric drive unit, the adjustment is unstable, and the total current may exceed the maximum allowable value, resulting in some electric drive units being deactivated and increasing the adjustment time.
The actual and target positioning of each component, as well as the predetermined adjustment speed and duration of each electric drive unit, determine the target adjustment speed of the electric drive unit of the component with the longest adjustment time, and adjust the target adjustment speed of the electric drive unit of the other component to ensure that all electric drive units are activated simultaneously without exceeding the maximum total current.
The smooth and comfortable adjustment of the vehicle seat is achieved, reducing manufacturing costs and overall weight, while avoiding the increase in adjustment time.
Smart Images
Figure CN120051396A_ABST
Abstract
Description
Technical Field
[0001] The proposed solution relates to a vehicle seat, a control method, a corresponding computer program product, and a non-volatile computer-readable storage medium. Background Art
[0002] Vehicle seats can generally be adjusted in a variety of ways. Just to name a few examples, they can be adjusted along the longitudinal direction of the vehicle, in the height direction, in terms of the backrest inclination, and in terms of the height of the headrest. Many modern vehicle seats respectively include electric drive units for this purpose, each of which has an electric motor.
[0003] When using such a vehicle seat, it is usually necessary to activate multiple or even all of the electric drive units in order to transfer the relevant vehicle seat from one configuration to another. For example, when changing users, it is adjusted to a forward position for easy access to the rear seat (which is also called the convenient access position), adjusted to a loading position with the backrest folded down (which is also called the flat-fold position), or rotate a vehicle seat, also known as a captain's chair, between a driving position oriented in the driving direction and a position facing the interior space of the vehicle.
[0004] If all the electric drive units to be activated are started simultaneously here, since the adjustment durations until the respective target settings are achieved are different, these electric drive units stop in sequence. This will cause potential discomfort and unevenness at the beginning of the adjustment. In addition, the total current of the electric drive units to be activated may exceed the maximum total current, so some of these electric drive units must be deactivated. Once the total current of the activated electric drive units is allowed, the activation of each individual electric drive unit is added, but this may result in a longer adjustment duration. Summary of the Invention
[0005] The task is to improve the control of the vehicle seat.
[0006] This task is solved by the subject matter having the features of claim 1.
[0007] Accordingly, a vehicle seat comprises: a plurality of electric drive units; a plurality (e.g., two, three or more) of components that can be adjusted respectively by means of one of the electric drive units; and a control system coupled to the electric drive units. The control system is configured to perform the following steps: respectively obtain the actual positions and target positions of at least two of the components (especially all components); respectively obtain the values of the adjustment durations of at least two of the components from their respective actual positions to their respective target positions at the respectively predetermined adjustment speeds of the corresponding electric drive units, and obtain the component with the longest adjustment duration; determine the target adjustment speed of the electric drive unit of at least one other component among at least two of the components based on the value of the adjustment duration of the component with the longest adjustment duration; and activate the electric drive units of the component with the longest adjustment duration and the at least one other component to adjust at least these components from their respective actual positions to their respective target positions, wherein at least the electric drive unit of the at least one other component is activated at the correspondingly determined target adjustment speed.
[0008] This is based on the idea that adjusting, especially reducing, the adjustment speeds of those drive units that will reach the destination faster at the predetermined adjustment speeds can result in less electrical demand for these drive units, so that all drive units can be activated simultaneously without exceeding the maximum total current. This can also reduce the cable cross-section and use simpler electronic components, which can achieve lower manufacturing costs and a lighter overall weight. In addition, particularly smooth and comfortable adjustment can be achieved. The control system can be arranged on the vehicle seat or alternatively at least partially outside the vehicle seat. The control system can also be the central control system of a vehicle having the vehicle seat.
[0009] The control system can be configured to respectively obtain the values of the adjustment durations of all components from their respective actual positions to their respective target positions at the respectively predetermined (e.g., nominal) adjustment speeds of the corresponding electric drive units. Accordingly, the respective adjustment durations of the faster components can be adjusted according to the adjustment duration of the slowest component.
[0010] The target adjustment speed of the electric drive unit of the component with the longest adjustment duration can be equal to the predetermined adjustment speed or can be set to the predetermined adjustment speed. Alternatively or additionally, the target adjustment speed of the electric drive unit of at least one other component can be set to a value lower than the corresponding predetermined adjustment speed. Accordingly, the slowest component can be adjusted at a predetermined speed, while the faster components are adjusted at a speed lower than the predetermined speed.
[0011] The respectively pre-determined adjustment speeds of the individual electric drive units can represent the maximum adjustment speeds of the respective electric drive units. Thus, the slowest component can be adjusted at the maximum speed, while the remaining components are adjusted at speeds below their respective maximum speeds.
[0012] The control system is optionally set up to control the electric drive units to adjust the components such that the drive units all start within a short time window, in particular within a pre-determined time window, which for example is 10%, 5% or only 1% of the adjustment duration of the component with the longest adjustment duration (and / or is 0.5 seconds, 0.2 seconds or 0.1 seconds). In particular, the electric drive units can start simultaneously. This enables a particularly comfortable adjustment.
[0013] In addition, the control system can be set up to determine the target adjustment speeds of the electric drive units of at least one additional component such that the component with the longest adjustment duration and at least one additional component (in particular all components) reach their respective target positions of the components within a pre-determined (short) time window (in particular within a time window of 0.5 seconds, 0.2 seconds or 0.1 seconds). In particular, it can be provided that those components (in particular all components) reach their respective target positions simultaneously. This enables a particularly comfortable adjustment, where the end of the adjustment is clearly visible to the user.
[0014] The control system can be set up to control the electric drive units to adjust the components such that the jerk of the adjustment is below a pre-determined maximum jerk. Jerk is the derivative of acceleration with respect to time. For this purpose, the adjustment speed of at least one of the components can vary during the adjustment, for example, it can accelerate more slowly than one or more other components. This can promote a particularly smooth but still fast adjustment.
[0015] One or more of the electric drive units, in particular each of the electric drive units, can respectively include a brushless DC motor. Such motors allow for a particularly good adjustment of the adjustment speed via the setting of the rotational speed. In general, the adjustment speed can be measured via the rotational speed. Alternatively or additionally, one or more of the electric drive units include brushed motors.
[0016] One of the components (such as the component with the longest adjustment duration or an additional component) can be a seating part that can be adjusted relative to the vehicle floor (along a straight or curved trajectory) with respect to the seat height. Alternatively or additionally, one of the components (such as an additional component or the component with the longest adjustment duration) can be a base that can be adjusted relative to the vehicle floor in other directions, such as along the longitudinal direction (which for example is angled with respect to the seat height, for example vertically). The base can carry the seating part.
[0017] It is possible to provide that one of the components is a backrest with adjustable inclination, and / or one of the components is a seat pan part with adjustable seat depth, and / or one of the components is an adjustable lumbar support, and / or one of the components is an adjustable headrest, and / or one of the components is an adjustable armrest. In particular, the vehicle seat can include all of these components.
[0018] The vehicle seat can include a weight sensor for detecting the weight of a user sitting on the vehicle seat, wherein the control system is configured to determine a target adjustment speed of at least one of the electric drive units of the components based on the detected weight. If this target adjustment speed is taken into account in the determination, better synchronized adjustment can be achieved.
[0019] Optionally, the control system is configured to determine a target adjustment speed of the electric drive unit of at least one further component based on the current demand of the electric drive unit and a pre-determined maximum total current demand for the sum of the current demands of the electric drive units. Thus, these adjustment speeds can be set so as not to exceed the pre-determined maximum total current demand. For this purpose, the adjustment speed of at least one of the components can be changed during the adjustment, for example such that it accelerates more slowly than one or more of the other components.
[0020] According to one aspect, a computer-implemented method for adjusting a device, in particular a vehicle seat, in particular a vehicle seat according to any of the designs described herein, is described. The device (in particular the vehicle seat) includes a plurality of electric drive units and two or more components that can be adjusted respectively by means of one of the electric drive units. The method includes the following steps: respectively obtaining the actual position and the target position of at least two of the components; respectively obtaining the values of the adjustment durations of at least two of the components from the actual position to the target position at respectively pre-determined adjustment speeds of the corresponding electric drive units, and obtaining the component with the longest adjustment duration; determining a target adjustment speed of the electric drive unit of at least one further component of at least two of the components based on the value of the adjustment duration of the component with the longest adjustment duration; and activating the electric drive units of the component with the longest adjustment duration and at least one further component to adjust at least these two components from their respective actual positions to their respective target positions, wherein at least the electric drive unit of the at least one further component is activated at the (corresponding) determined target adjustment speed.
[0021] The method can include steps according to the various designs of the control system described above.
[0022] According to one aspect, a computer program product is described, which includes instructions that, when implemented by one or more computers (for example in the form of the control system described above), cause the one or more computers to implement the method described above.
[0023] According to one aspect, a non - volatile computer - readable storage medium is described, on which instructions are stored, which, when implemented by one or more computers (such as in the form of the above - mentioned control system), cause the one or more computers to implement the above - mentioned method. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The concept of the present invention will be explained in detail below with reference to the embodiments shown in the accompanying drawings. Among them:
[0025] Figure 1 A vehicle seat in a first use position with a plurality of adjustable components is shown;
[0026] Figure 2 A vehicle seat in a second use position according to Figure 1 is shown;
[0027] Figure 3 A schematic diagram for representing jerk, acceleration, speed, and positioning during the adjustment of a vehicle seat according to Figure 1 is shown; and
[0028] Figure 4 A method for controlling a vehicle seat is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] Figure 1 A vehicle seat 1 with a plurality of adjustable components 10A - 10G is shown. In addition, the vehicle seat 1 includes a plurality of electric drive units 11A - 11G respectively for adjusting one of the components 10A - 10G relative to the other parts of the vehicle seat 1 and a control system 12 for controlling the electric drive units 11A - 11G. For this purpose, the electric drive units 11A - 11G are coupled to the control system 12 via a control cable (alternatively wirelessly). The vehicle seat 1 can also be referred to as a vehicle seat system.
[0030] Figure 1 The vehicle seat 1 in a first use position is shown. Figure 2 The vehicle seat 1 in a second use position where a person can sit is shown. In addition, the vehicle seat 1 can be transferred to a convenient access position and a folded - flat position.
[0031] Among them, the component 10A - 10G is the seating part 10A, on which a cushion 13 is mounted. Another one of the components 10A - 10G is the backrest 10C. The seating part 10A is supported on the base 10B in a manner that can be adjusted via a height - adjusting mechanism 100, and the base 1 represents another one of the components 10A - 10G.
[0032] At present, the height adjustment mechanism 100 (on both sides respectively) includes a four-bar linkage mechanism having a front rod and a rear rod. However, other design solutions can also be considered. These rods are respectively supported on the seating part 10A and the base 10B in a swingable manner. Depending on the swing posture of the rods, the seating part 10A can be brought, as shown in Figure 1 , to a lowered position close to the vehicle floor 2, or can be brought, as shown in Figure 2 , to a raised position farther from the vehicle floor 2. For the convenient entry position, the rods can swing further forward. For example, in the convenient entry position, it is convenient to enter the seat row behind the vehicle seat 1. An electric drive unit 11A is provided to promote the adjustment of the seating part 10A relative to the base 10B. The electric drive unit 11A includes a brushless DC motor 110. Such a motor is also simply referred to as a BLDC motor. The DC motor 110 can operate at a variable speed. A higher speed results in a greater demand for current from the vehicle electrical network, and a lower speed results in a lower demand for current from the vehicle electrical network. The DC motor 110 is exemplarily coupled to a lead screw via a transmission. The lead screw is mounted on the seating part 10A, and the DC motor 110 is mounted on the base 10B (alternatively, for example, vice versa), so that activating the electric drive unit 10A causes the lead screw to move relative to the lead screw nut to adjust the seating part 10A relative to the base 10B.
[0033] The base 10B is formed by the seat-side track of the track assembly 101. In addition to the seat-side track, the track assembly 101 also includes a floor-side track that can be fastened to the vehicle floor 2 and is fastened in the illustrated example. The seat-side track is guided longitudinally movably on the floor-side track. An electric drive unit 11B is provided to promote the adjustment of the base 10B relative to the vehicle floor 2 (and relative to the floor-side track). The electric drive unit 11B also includes a BLDC motor that cooperates with a lead screw. By activating the electric drive unit 11B, the vehicle seat can be adjusted in the longitudinal direction. Figure 1 A more rearward adjustment is shown, while Figure 2 illustrates a more forward adjustment. For the convenient entry position, the vehicle seat 1 can be positioned more forwardly.
[0034] The backrest 10C, as yet another component, is supported in a manner that can swing relative to the seating part 10A by means of an inclination adjuster 15. To promote the adjustment, an electric drive unit 11C is provided, which in this example also includes a BLDC motor, and the inclination adjuster 15 is driven by means of this BLDC motor. The inclination adjuster is a transmission fitting. Figure 1 A rearward tilting adjustment is shown, while Figure 2A more upright setting is illustrated. For the easy entry position, the backrest 10C can be tilted further forward. For the fold flat position, the backrest 10C can be folded onto the seating portion 10A.
[0035] The seat pan portion 10D as a further component can be adjusted longitudinally for adjusting the seat depth relative to the seating portion 10A. Figure 1 The seat portion 10D is shown in a further retracted position than in Figure 2 The seat pan part 10D is shown in a further extended position with a smaller seat depth. In order to effect the adjustment of the seat pan part 10D, an electric drive unit 11D is provided, which in turn comprises, by way of example, a BLDC motor.
[0036] In a further component in the form of a lumbar support 10E, the size and (alternatively or additionally) the positioning of the curvature can be adjusted by means of an electric drive unit 11E. Figure 1 shows a weaker camber, while Figure 2 A stronger camber is shown.
[0037] The headrest 10F as a further component is adjustable in terms of its height relative to the backrest 10C (alternatively or additionally adjustable with regard to the positioning in the longitudinal direction). For this purpose, an electric drive unit 11F is provided. Figure 1 is shown in a position closer to the backrest 10C, while Figure 2 A further extended position is shown.
[0038] As a further component, the armrest 10G can be adjusted in terms of its inclination relative to the backrest 10C (alternatively or additionally in terms of its length and / or width) by means of a corresponding electric drive unit 11G. Figure 1 shows the horizontal adjustment, while Figure 2 The tilted position is shown.
[0039] The control system 12 is configured to know the actual position and target position of at least two of the components 10A-10G. Specifically, the control system 12 is configured to know the actual position and target position of all of the components 10A-10G, respectively. To this end, the control system 12 communicates with the electric drive units 11A-11G, for example.
[0040] Furthermore, the control system 12 is configured to obtain values of the adjustment durations for at least two (specifically all) of the components 10A - 10G to be adjusted from their actual positions to their target positions at respectively predetermined adjustment speeds by means of the corresponding electric drive units 11A - 11G. For this purpose, one of the components 10A - 10G has the longest adjustment duration for being adjusted from the corresponding actual position to the corresponding target position at the respectively predetermined adjustment speed of the corresponding electric drive unit 11A - 11G. This component can be referred to as the component with the longest adjustment duration.
[0041] The control system 12 is also configured to determine the target adjustment speeds of at least one of the other electric drive units 11A - 11G of the components based on the value of the adjustment duration of the component 10A - 10G with the longest adjustment duration. Currently, the control system 12 is also configured to determine the target adjustment speed of each of the electric drive units 11A - 11G. Herein, the target adjustment speed of the electric drive unit 11A - 11G of the component 10A - 10G with the longest adjustment duration is set equal to the respectively predetermined adjustment speed, and the target adjustment speeds of the (multiple) electric drive units 11A - 11G of at least one of the other components 10A - 10G (currently all of the components 10A - 10G) are set to values lower than the respectively predetermined adjustment speeds. The control system 12 includes a non - volatile storage medium 120, on which the respectively predetermined adjustment speeds are stored. The respectively predetermined adjustment speeds of the electric drive units 11A - 11G are the maximum adjustment speeds of their respective electric drive units 11A - 11G.
[0042] Furthermore, the control system 12 is also configured to activate at least two (specifically all) of the electric drive units 11A - 11G of the components 10A - 10G to adjust at least two (here all) of the components 10A - 10G from their respective actual positions to their respective target positions, wherein at least the electric drive units 11A - 11G of the other components 10A - 10G are activated at the target adjustment speeds determined therefor.
[0043] For particularly comfortable adjustment, the control system 12 is also set up to control the electric drive units 11A - 11G in such a way as to adjust the components 10A - 10G, i.e., such that the drive units 11A - 11G start simultaneously (or at least within a certain time window, which is 0.5 seconds, 0.2 seconds or 0.1 seconds and / or 10%, 5% or 1% of the adjustment duration of the component 10A - 10G with the longest adjustment duration). Optionally, the drive units 11A - 11G start and / or brake in a time - staggered manner. For this purpose, for example, it is possible to distribute the increased starting current over time. The control system 12 is also set up to determine the target adjustment speed of all the electric drive units 11A - 11G except for the electric drive units of the components 10A - 10G with the longest adjustment duration, such that all the components 10A - 10G reach their respective target positions simultaneously, or at least within a time window of 10%, 5% or 1% of the maximum adjustment duration.
[0044] The mentioned target adjustment speed can remain constant over the entire adjustment duration. Alternatively, the target adjustment speed can also vary over the adjustment stroke.
[0045] To increase the accuracy of adjustment synchronization, the vehicle seat 1 includes (optionally) a weight sensor 14 for detecting the weight of the user sitting on the vehicle seat 1. The control system 12 is set up to determine the target adjustment speed and / or the operating current of at least the electric drive units 11A - 11G of the further components 10A - 10G (here all the electric drive units 11A - 11G) based on the detected weight. For example, during height adjustment, some of the components 10A - 10G adjust more slowly in the case of a greater weight, which would cause the remaining components to reach their respective target positions faster. This situation can be corrected by taking the weight into account.
[0046] In addition, the control system 12 is also set up to determine the target adjustment speed of at least the electric drive units 11A - 11G of the further components 10A - 10G (here all the electric drive units 11A - 11G) based on the current demand of the electric drive units 11A - 11G and a pre - determined maximum total current demand for the sum of the current demands of the electric drive units 11A - 11G. Thus, if necessary, the adjustment speed can be reduced so as not to exceed the maximum total current demand. For example, in the case of linear wiring of the drive units 11A - 11G, the power can be modeled and / or the position of each drive unit 11A - 11G in the chain can be taken into account. For example, the drive units 11A - 11G can be controlled (and / or their number determined) based on their respective positions in the chain of current delivery, e.g., instead of simply enabling a maximum of three drive units 11A - 11G, a maximum of four can be enabled in the front section of the chain and only a maximum of two in the rear section, etc.
[0047] The target positions can be stored in the storage medium 120. For example, multiple users can store the configurations of the vehicle seat 1 respectively.
[0048] Figure 3 Shown is the position P of a certain point on the vehicle seat 1 varying along the longitudinal axis with time T starting from the initial position x0, as well as the velocity V starting from the initial velocity v0, the acceleration A starting from the initial acceleration a0, and the jerk J. Multiple adjustment movements can be superimposed, so that a large jerk may occur in the case of simultaneous start. To prevent this, the control system 12 is set up to control the electric drive units 11A - 11G to adjust the components 10A - 10G such that the adjusted jerk J is less than the pre-determined maximum jerk + / -jMax. In the first time period T1, the jerk J is maximum, the acceleration A increases correspondingly, and the velocity V increases correspondingly. In the second time period T2, the jerk J is equal to zero, and the acceleration A is correspondingly constant at the maximum acceleration. In the third time period T3, the jerk J is minimum, and the acceleration A decreases correspondingly. Then, the jerk J and the acceleration A are equal to zero, and the velocity V is constant at the reference velocity vRef.
[0049] Optionally, the electric drive units 11A - 11G are controlled at a varying target adjustment speed in order to avoid one or more obstacles (such as the headliner).
[0050] Figure 4 Shown is a method for adjusting the vehicle seat 1, where the method is, for example, executed by the control system 12 and includes the following steps:
[0051] Step S100: Obtain the actual and target positions of at least two (such as the first and second) components 10A - 10G (optionally all components 10A - 10G).
[0052] Step S101: Respectively obtain the values of the adjustment durations of at least two (or only the first or all) components 10A - 10G from the actual position to the target position at the respectively pre-determined adjustment speeds of the corresponding electric drive units 11A - 11G, and optionally, obtain the component having the longest adjustment duration among the obtained adjustment durations.
[0053] Step S102: Based on the value of the adjustment duration of the component 10A - 10G with the longest adjustment duration (such as the first), determine the target adjustment speeds of the electric drive units 11A - 11G of at least one other (such as the second, especially all the remaining) component among at least these two components 10A - 10G. For example, set the respective target adjustment speeds such that the resulting adjusted adjustment durations of the components 10A - 10G are equal to the longest adjustment duration.
[0054] Step S103: Enable the electric drive units 11A - 11G of the component 10A - 10G with the longest adjustment duration and at least one additional component 10A - 10G (e.g., at least the first and second components 10A - 10G) to adjust at least these (e.g., all) components 10A - 10G from their respective actual positions to their respective target positions, wherein the electric drive units 11A - 11G of at least one additional (e.g., second) component 10A - 10G are enabled at a (respectively) determined target adjustment speed.
[0055] A computer program product is stored in the storage medium 120. The computer program product includes instructions that, when implemented by the control system 12, cause the control system to execute the above - mentioned method.
[0056] List of reference numerals
[0057] 1 Vehicle seat
[0058] 10A Occupied part (component)
[0059] 10B Base (component)
[0060] 10C Backrest (component)
[0061] 10D Seat pan part (component)
[0062] 10E Lumbar support (component)
[0063] 10F Headrest (component)
[0064] 10G Armrest (component)
[0065] 100 Height adjustment mechanism
[0066] 101 Track assembly
[0067] 11A - 11G Electric drive unit
[0068] 110 DC motor
[0069] 12 Control system
[0070] 120 Storage medium
[0071] 13 Pad
[0072] 14 Weight sensor
[0073] 15 Tilt regulator
[0074] 2 Vehicle floor
[0075] A Acceleration
[0076] a0 Initial acceleration
[0077] aMax Maximum acceleration
[0078] J Jerk
[0079] jMax Maximum jerk
[0080] P Positioning
[0081] S100 - S103 Steps
[0082] T Time
[0083] T1 - T3 Time periods
[0084] V Velocity
[0085] v0 Initial velocity
[0086] vRef Reference velocity
[0087] x0 Initial positioning
Claims
1. Vehicle seat (1), said vehicle seat comprising: a plurality of electric drive units (11A - 11G); two or more components (10A - 10G) that can be adjusted respectively by means of one of the electric drive units (11A - 11G); and a control system (12) coupled to the electric drive units (11A - 11G), the control system being configured to perform the following steps: - respectively obtaining the actual positions and target positions of at least two of the components (10A - 10G); - respectively obtaining the values of the adjustment durations of the at least two of the components (10A - 10G) from the actual position to the target position at the respectively predetermined adjustment speeds of the corresponding electric drive units (11A - 11G), and obtaining the component (10A - 10G) having the longest adjustment duration; - determining the target adjustment speed of the electric drive unit (11A - 11G) of at least one other component among the at least two of the components (10A - 10G) based on the value of the adjustment duration of the component (10A - 10G) having the longest adjustment duration; and - enabling the electric drive units (11A - 11G) of the component (10A - 10G) having the longest adjustment duration and the at least one other component (10A - 10G) to adjust at least these components (10A - 10G) from their respective actual positions to their respective target positions, wherein at least the electric drive unit (11A - 11G) of the at least one other component (10A - 10G) is enabled at the correspondingly determined target adjustment speed.
2. The vehicle seat (1) according to claim 1, wherein the target adjustment speed of the electric drive unit (11A - 11G) of the component (10A - 10G) having the longest adjustment duration is equal to the predetermined adjustment speed, wherein the target adjustment speed of the electric drive unit (11A - 11G) of the at least one other component (10A - 10G) is set to a value lower than the corresponding predetermined adjustment speed.
3. The vehicle seat (1) according to claim 1 or 2, wherein the respectively predetermined adjustment speeds of the electric drive units (11A - 11G) represent the maximum adjustment speeds of the respective electric drive units (11A - 11G).
4. The vehicle seat (1) according to any one of the preceding claims, wherein the control system (12) is configured to control the electric drive units (11A - 11G) to adjust the components (10A - 10G) such that the drive units (11A - 11G) start within a predetermined time window, in particular simultaneously.
5. The vehicle seat (1) according to any one of the preceding claims, wherein The control system (12) is set up to determine a target adjustment speed of the electric drive units (11A - 11G) of the at least one additional component (10A - 10G) such that at least the component (10A - 10G) with the longest adjustment duration and the at least one additional component (10A - 10G) reach their respective target positions of the components (10A - 10G) within a predefined time window, in particular simultaneously.
6. The vehicle seat (1) according to any one of the preceding claims, characterized in that the control system (12) is set up to control the electric drive units (11A - 11G) to adjust the components (10A - 10G) such that the jerk (J) of the adjustment is lower than a predefined maximum jerk (jMax).
7. The vehicle seat (1) according to any one of the preceding claims, characterized in that the electric drive units (11A - 11G) each include a brushless DC motor.
8. The vehicle seat (1) according to any one of the preceding claims, characterized in that one of the components (10A) is a seating part adjustable relative to the vehicle floor (2) with respect to seat height, and one of the components (10B) is a base adjustable relative to the vehicle floor (2) in other directions and supporting the seating part.
9. The vehicle seat (1) according to any one of the preceding claims, characterized in that one of the components (10C) is a backrest with adjustable inclination, and / or one of the components (10D) is a seat pan part with adjustable seat depth, and / or one of the components (10E) is an adjustable lumbar support, and / or one of the components (10F) is an adjustable headrest, and / or one of the components (10G) is an adjustable armrest.
10. The vehicle seat (1) according to any one of the preceding claims, characterized in that it has a weight sensor (14) for detecting the weight of a user sitting on the vehicle seat (1), wherein the control system (12) is set up to determine the target adjustment speed and / or operating current of the electric drive units (11A - 11G) of the at least one additional component (10A - 10G) based on the detected weight.
11. The vehicle seat (1) according to any one of the preceding claims, characterized in that the control system (12) is set up to determine the target adjustment speed of the electric drive units (11A - 11G) of the at least one additional component (10A - 10G) based on the current demand of the electric drive units (11A - 11G) and a predefined maximum total current demand for the sum of the current demands of the electric drive units (11A - 11G).
12. A method for adjusting a device, in particular a vehicle seat (1) according to any one of the preceding claims, the device comprising a plurality of electric drive units (11A - 11G) and two or more components (10A - 10G) that can be adjusted respectively by one of the electric drive units (11A - 11G), wherein the method comprises the following steps: - By means of a control system (12), respectively obtain (S100) the actual positions and target positions of at least two of the components (10A - 10G); - By means of the control system (12), respectively obtain (S101) the values of the adjustment durations of the at least two of the components (10A - 10G) from the actual positions to the target positions at respectively predetermined adjustment speeds of the corresponding electric drive units (11A - 11G), and obtain the component (10A - 10G) having the longest adjustment duration; - By means of the control system (12), based on the value of the adjustment duration of the component (10A - 10G) having the longest adjustment duration, determine (S102) the target adjustment speed of the electric drive unit (11A - 11G) of at least one other component among the at least two of the components (10A - 10G); and - By means of the control system (12), activate (S103) the electric drive units (11A - 11G) of the component (10A - 10G) having the longest adjustment duration and the at least one other component (10A - 10G) to adjust at least these components (10A - 10G) from their respective actual positions to their respective target positions, wherein at least the electric drive unit (11A - 11G) of the at least one other component (10A - 10G) is activated at the correspondingly determined target adjustment speed.
13. A computer program product, the computer program product comprising instructions which, when implemented by one or more computers, cause the one or more computers to perform the method according to claim 12.
14. A non - volatile computer - readable storage medium (120) having stored thereon instructions which, when implemented by one or more computers, cause the one or more computers to perform the method according to claim 12.