Magnetorheological active suspension with adjustable inerter

Abstract

Active torque is applied to a magneto-rheological clutch through a motor rotor, a magnetic control flow channel is formed in the clutch, when a force output rod moves stably, current is applied to a magnetic part, the magnetic field intensity in the magnetic control flow channel is changed, the viscosity and shear strength of a magneto-rheological medium are changed, and the inertia capacity of the magneto-rheological active suspension is adjusted. The rotor disc and the magneto-rheological clutch rotor are relatively static with the magneto-rheological clutch stator, so that the adjustable torque of the motor is transmitted to the screw rod, the suspension inerter is increased, and the active torque transmitted between the motor rotor and the magneto-rheological clutch is increased; when the force output rod is subjected to high-speed impact, the magnetic field intensity in the magnetic control flow channel is changed by reducing the current of the magnetic part.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, in particular to a magnetorheological active suspension with adjustable inertia. Background Art

[0002] The suspension is an important connecting component between the tire and the vehicle body, which is used to attenuate the excitation transmitted to the frame by ground unevenness and improve the vehicle's handling stability during driving.

[0003] Active suspension uses the motor to apply active force to offset or attenuate the excitation force of the road on the vehicle body to achieve better vibration reduction effect. The active torque output by the motor is generally converted into a linear active force through a ball screw mechanism. However, in this structural form, since the motor rotor itself has a certain inertia, the ball screw mechanism also has a non-negligible inertia. This will result in the active suspension being unable to quickly attenuate the impact force when subjected to impact loads, greatly reducing the vibration reduction effect and having a greater impact on the vehicle's handling stability and ride comfort.

[0004] Therefore, how to quickly attenuate the impact force of the active suspension when it is subjected to an impact load while providing active torque is a technical problem that needs to be solved urgently in active suspension technology. Summary of the invention

[0005] The object of the present invention is to provide a magnetorheological active suspension with adjustable inertia to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A magnetorheological active suspension with adjustable inertia comprises a lifting lug outer cylinder for connecting and encapsulating a motor; a motor rotor for connecting the motor and a magnetorheological clutch and transmitting the motor torque; a magnetorheological clutch outer cylinder for connecting the lifting lug outer cylinder and a ball screw outer cylinder and encapsulating the magnetorheological clutch; a magnetorheological clutch connected to the motor rotor for converting the motor torque into a variable active torque and adjusting the damping force and the size of the inertia; a magnetic part for forming a variable magnetic field in the magnetorheological clutch and adjusting the transmitted torque; a lead screw connected to the magnetorheological clutch and transmitting the adjustable active torque of the magnetorheological clutch; an output rod for converting the rotational motion of the lead screw into axial motion and transmitting the axial force; and a ball screw outer cylinder connected to the magnetorheological clutch outer cylinder and sealing the magnetorheological clutch and the output rod.

[0007] As a preferred embodiment of the present invention: the motor rotor is installed between the outer tube of the lifting ear and the magnetorheological clutch, wherein the magnetorheological clutch includes: a rotor support A, used to connect the motor rotor and the magnetorheological clutch stator, and used to transmit the active torque of the motor to the magnetorheological clutch; a rotor bearing A, used to connect the magnetorheological clutch stator and the magnetorheological clutch outer tube, so that the magnetorheological clutch stator and the magnetorheological clutch outer tube can rotate relative to each other; a rotor bearing B, used to connect the magnetorheological clutch stator and the magnetorheological clutch rotor, so that the magnetorheological clutch stator and the magnetorheological clutch rotor can rotate relative to each other; the magnetorheological clutch stator is fixedly connected to the rotor support, and is used to rotate or remain stationary relative to the magnetorheological clutch rotor and the rotor disk to control the transmission of the active torque; an axial seal A, used to seal the magnetorheological fluid between the magnetorheological clutch stator and the magnetorheological clutch rotor; a magnetic part, used to seal the magnetorheological fluid between the magnetorheological clutch stator, the magnetorheological clutch rotor and the rotor disk A controllable magnetic field is formed between the rotor and the magnetorheological clutch to adjust the output torque; the rotor disk is connected to the magnetorheological clutch rotor, and there is a magnetorheological medium between the rotor and the magnetorheological clutch stator, which is used to rotate or stop relative to the magnetorheological clutch stator and transmit the variable torque to the magnetorheological clutch rotor; the magnetorheological clutch rotor is connected to the lead screw and the rotor disk, and is used to transmit the variable torque to the ball screw pair; the axial seal B is used to seal the magnetorheological fluid between the magnetorheological clutch stator and the magnetorheological clutch rotor; the rotor support B is connected to the magnetorheological clutch rotor, and is used to connect and fix the magnetorheological clutch rotor with the rotor bearing C and the rotor bearing D; the rotor bearing C is used to connect the magnetorheological clutch rotor with the magnetorheological clutch stator, so that the rheological damper rotor and the magnetorheological clutch stator can rotate relative to each other; the rotor bearing D is used to connect the magnetorheological clutch stator with the magnetorheological clutch outer cylinder, so that the magnetorheological clutch stator and the magnetorheological clutch outer cylinder can rotate relative to each other.

[0008] As a further preferred embodiment of the present invention: the magnetorheological clutch stator, magnetic part, rotor disk and magnetorheological clutch rotor cooperate to form a magnetically controlled flow channel; the rotor disk is fixedly connected to the magnetorheological rotor and can rotate relative to the magnetorheological clutch stator, and transmits torque by shearing the magnetorheological medium in the magnetically controlled flow channel.

[0009] As a further preferred embodiment of the present invention: the lead screw and the lower end of the output rod together constitute a ball screw pair, the lead screw rotates with the magnetorheological clutch rotor, transmitting the adjustable active torque to the output rod, and there is a guide structure between the output rod and the outer tube of the ball screw, which expands and contracts axially with the rotation of the lead screw and converts the adjustable active torque into an axially adjustable active force.

[0010] As a further preferred embodiment of the present invention: the motor rotor is installed between the outer cylinder of the ball screw and the magnetorheological clutch; the magnetorheological clutch includes: a rotor support B, which is used to connect the motor rotor and the magnetorheological clutch stator to transmit the active torque of the motor to the magnetorheological clutch; a rotor bearing D, which is used to connect the magnetorheological clutch stator and the magnetorheological clutch outer cylinder so that the magnetorheological clutch stator and the magnetorheological clutch outer cylinder can rotate relative to each other; a rotor bearing C, which is used to connect the magnetorheological clutch stator and the magnetorheological clutch rotor so that the motor rotor and the magnetorheological clutch rotor can rotate relative to each other; the magnetorheological clutch stator is fixedly connected to the rotor support B, and rotates or remains relatively to the magnetorheological clutch rotor and the rotor disk to control the transmission of the active torque; an axial seal A, which is used to seal the magnetorheological fluid between the magnetorheological clutch stator and the magnetorheological clutch rotor; a magnetic part, which is used to form a magnetic field between the magnetorheological clutch stator, the magnetorheological clutch rotor and the rotor disk A controllable magnetic field is formed to adjust the output torque; a rotor disk is connected to the magnetorheological clutch rotor, and a magnetorheological medium exists between the rotor disk and the magnetorheological clutch stator, which is used to rotate or stop relative to the magnetorheological clutch stator and transmit the variable torque to the magnetorheological clutch rotor; the magnetorheological clutch rotor is connected to the lead screw and the rotor disk, and is used to transmit the variable torque to the ball screw pair; an axial seal B is used to seal the magnetorheological fluid between the magnetorheological clutch stator and the magnetorheological clutch rotor; a rotor support A is connected to the magnetorheological clutch rotor, and is used to connect and fix the magnetorheological clutch rotor with the rotor bearing C and the rotor bearing D; a rotor bearing B is used to connect the magnetorheological clutch rotor with the magnetorheological clutch stator, so that the rheological damper rotor and the magnetorheological clutch stator can rotate relative to each other; a rotor bearing A is used to connect the magnetorheological clutch stator with the magnetorheological clutch outer cylinder, so that the magnetorheological clutch stator and the magnetorheological clutch outer cylinder can rotate relative to each other.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention applies active torque to the magnetorheological clutch through the motor rotor, wherein the magnetorheological medium filled in the magnetorheological clutch is used as a buffer medium for limiting the rotation of the magnetorheological clutch rotor, and a magnetorheological flow channel is arranged in the clutch. When the output rod moves stably, by applying current to the magnetic part, the magnetic field strength in the magnetorheological flow channel is changed to change the viscosity and shear strength of the magnetorheological medium, so that the rotor disk and the magnetorheological clutch rotor and the magnetorheological clutch stator are relatively stationary, and the adjustable torque of the motor is transmitted to the lead screw, so that the suspension inertia increases, and the active torque transmitted between the motor rotor and the magnetorheological clutch increases; when the output rod is subjected to high-speed impact, by reducing the current to the magnetic part, the magnetic field strength in the magnetorheological flow channel is changed, and the viscosity and shear strength of the magnetorheological medium are reduced, so that the rotor disk and the magnetorheological clutch rotor and the magnetorheological clutch stator rotate relative to each other, so that the suspension inertia decreases, and the active torque transmitted between the motor rotor and the magnetorheological clutch is rapidly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a cross-sectional view of embodiment 1 of the present invention; Figure 2 yes Figure 1 A partial enlarged view of Example 1 is shown; Figure 3 is a cross-sectional view of embodiment 2 of the present invention Figure 4 yes Figure 3 A partial enlarged view of Example 2 Figure 5 It is a working principle diagram of the present invention.

[0013] In the figure: 1. outer cylinder of lifting ear; 2. motor rotor; 3. rotor support A; 4. rotor bearing A; 5. rotor bearing B; 6. magnetorheological clutch stator; 7. axial seal A; 8. magnetic part; 9. rotor disk; 10. outer cylinder of magnetorheological clutch; 11. axial seal B; 12. rotor bearing C; 13. rotor bearing D; 14. magnetorheological clutch rotor; 15. rotor support B; 16. output rod; 17. outer cylinder of ball screw; 18. screw rod. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Embodiment 1: See also Figure 1-2 In an embodiment of the present invention, a magnetorheological active suspension with adjustable inertia includes a lifting ear outer cylinder 1 for connecting and encapsulating a motor; a motor rotor 2 for connecting the motor and a magnetorheological clutch and transmitting the motor torque; a magnetorheological clutch outer cylinder 10 for connecting the lifting ear outer cylinder 1 and a ball screw outer cylinder 17 and encapsulating the magnetorheological clutch; the magnetorheological clutch is connected to the motor rotor 2 to convert the motor torque into a variable active torque and adjust the damping force and the inertia; a magnetic part 8 is used to form a variable magnetic field in the magnetorheological clutch to adjust the transmitted torque; a screw 18 is connected to the magnetorheological clutch to transmit the adjustable active torque of the magnetorheological clutch; an output rod 16 converts the rotational motion of the screw into axial motion and transmits the axial force; a ball screw outer cylinder 17 is connected to the magnetorheological clutch outer cylinder 10 to seal the magnetorheological clutch and the output rod; Specifically, the motor rotor 2 is installed between the lifting ear outer cylinder 1 and the magnetorheological clutch, wherein the magnetorheological clutch includes: a rotor support A3, used to connect the motor rotor 2 and the magnetorheological clutch stator 6, used to transmit the main torque of the motor to the magnetorheological clutch; a rotor bearing A4, used to connect the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10, so that the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10 can rotate relative to each other; a rotor bearing B5, used to connect the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10. The magnetorheological clutch rotor 14 is configured to enable the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14 to rotate relative to each other; the magnetorheological clutch stator 6 is fixedly connected to the rotor support 3 to rotate or stop relative to the magnetorheological clutch rotor 14 and the rotor disk 9 to control the transmission of the active torque; the axial seal A7 is used to seal the magnetorheological fluid between the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14; the magnetic part 8 is used to form a controllable magnetic field between the magnetorheological clutch stator 6, the magnetorheological clutch rotor 14 and the rotor disk 9 to adjust the The output torque of the section; the rotor disk 9 is connected to the magnetorheological clutch rotor 14, and there is a magnetorheological medium between the magnetorheological clutch stator 6, which is used to rotate or stop relative to the magnetorheological clutch stator 6 and transmit the variable torque to the magnetorheological clutch rotor 14; the magnetorheological clutch rotor 14 is connected to the screw 18 and the rotor disk 9, and is used to transmit the variable torque to the ball screw pair; the axial seal B11 is used to seal the magnetorheological fluid between the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14; the rotor support B15, Connected to the magnetorheological clutch rotor 14, used to connect and fix the magnetorheological clutch rotor 14 to the rotor bearing C12 and the rotor bearing D13; the rotor bearing C12 is used to connect the magnetorheological clutch rotor 14 to the magnetorheological clutch stator 6, so that the rheological damper rotor 14 and the magnetorheological clutch stator 6 can rotate relative to each other; the rotor bearing D13 is used to connect the magnetorheological clutch stator 6 to the magnetorheological clutch outer cylinder 10, so that the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10 can rotate relative to each other; The magnetorheological clutch stator 6, magnetic part 8, rotor disk 9 and magnetorheological clutch rotor 14 cooperate to form a magnetorheological flow channel; the rotor disk 9 is fixedly connected to the magnetorheological rotor 14 and can rotate relative to the magnetorheological clutch stator 6, and transmits torque by shearing the magnetorheological medium in the magnetorheological flow channel.

[0018] When the output rod moves stably, current is applied to the magnetic part 8 to form a Figure 5The annular magnetic field shown changes the magnetic field strength in the magnetorheological flow channel to change the viscosity and shear strength of the magnetorheological medium, thereby increasing the damping force between the rotor disk 9 and the magnetorheological clutch rotor 14 and the magnetorheological clutch stator 6, and reducing the relative speed, thereby increasing the suspension inertia and increasing the active torque transmitted between the motor rotor and the magnetorheological clutch; when the output rod is subjected to a high-speed impact, the current is reduced in the magnetic part 8, thereby changing the magnetic field strength in the magnetorheological flow channel, reducing the viscosity and shear strength of the magnetorheological medium, thereby reducing the damping force between the rotor disk 9 and the magnetorheological clutch rotor 14 and the magnetorheological clutch stator, and increasing the relative speed, thereby reducing the suspension inertia and reducing the active torque transmitted between the motor rotor and the magnetorheological clutch.

[0019] The lead screw 18 and the lower end of the output rod 16 together form a ball screw pair. The lead screw 18 rotates with the magnetorheological clutch rotor 14, transmitting the adjustable active torque to the output rod 16. There is a guide structure between the output rod 16 and the ball screw outer tube 17, which extends / retracts axially with the rotation of the lead screw 18 and converts the adjustable active torque into an axially adjustable active force.

[0020] The magnetorheological medium includes but is not limited to magnetorheological fluid (MRF); in detail, the magnetorheological fluid includes but is not limited to a mixture of iron powder, an active agent and silicone oil. The mass component of the iron powder includes but is not limited to 60% of the total amount of the magnetorheological fluid. The specific components should be based on the use scenario of the vibration reduction device to meet the damping force requirements required.

[0021] Under the action of the magnetic field formed by the magnetic part, the viscosity and plasticity of the magnetorheological fluid change with the intensity of the magnetic field (for example, as the intensity of the magnetic field increases, the viscosity increases and the shear strength increases), so as to form different damping forces on the valve core (for example, the higher the viscosity, the greater the damping force provided).

[0022] Embodiment 2: See also Figure 3-5 , which is different from Example 1 in that the motor rotor 2 is installed between the ball screw outer cylinder 17 and the magnetorheological clutch; The magnetorheological clutch comprises: a rotor support B15, which is used to connect the motor rotor 2 and the magnetorheological clutch stator 6 to transmit the active torque of the motor to the magnetorheological clutch; a rotor bearing D13, which is used to connect the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10, so that the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10 can rotate relative to each other; a rotor bearing C12, which is used to connect the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14, so that the motor rotor 3 and the magnetorheological clutch rotor 14 can rotate relative to each other; the magnetorheological clutch stator 6 is fixedly connected to the rotor support B15, and rotates or remains relatively to the magnetorheological clutch rotor 14 and the rotor disk 9 to control the transmission of the active torque; an axial seal A7, which is used to seal the magnetorheological fluid between the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14; a magnetic part 8, which is used to form a controllable magnetic field between the magnetorheological clutch stator 6, the magnetorheological clutch rotor 14 and the rotor disk 9 to adjust the output torque; the rotor disk 9, which is connected to the magnetorheological clutch stator 6, the magnetorheological clutch rotor 14 and the rotor disk 9, and the magnetic part 8 is used to form a controllable magnetic field between the magnetorheological clutch stator 6, the magnetorheological clutch rotor 14 and the rotor disk 9 to adjust the output torque; The variable clutch rotor 14 is connected to the magnetorheological clutch stator 6, and there is a magnetorheological medium between it and the magnetorheological clutch stator 6, which is used to rotate or stop relative to the magnetorheological clutch stator 6 and transmit the variable torque to the magnetorheological clutch rotor 14; the magnetorheological clutch rotor 14 is connected to the lead screw 18 and the rotor disk 9 to transmit the variable torque to the ball screw pair; the axial seal B11 is used to seal the magnetorheological fluid between the magnetorheological clutch stator 6 and the magnetorheological clutch rotor 14; the rotor support A15 is connected to the magnetorheological clutch The rotor 14 is connected to the magnetorheological clutch rotor 14 and is used to connect and fix the magnetorheological clutch rotor 14 to the rotor bearing C12 and the rotor bearing D13; the rotor bearing B5 is used to connect the magnetorheological clutch rotor 14 to the magnetorheological clutch stator 6, so that the rheological damper rotor 14 and the magnetorheological clutch stator 6 can rotate relative to each other; the rotor bearing A4 is used to connect the magnetorheological clutch stator 6 to the magnetorheological clutch outer cylinder 10, so that the magnetorheological clutch stator 6 and the magnetorheological clutch outer cylinder 10 can rotate relative to each other.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A magnetorheological active suspension with adjustable inertia, characterized in that: The invention comprises a lifting lug outer cylinder (1) for connecting and encapsulating a motor; a motor rotor (2) for connecting the motor and a magnetorheological clutch and transmitting the motor torque; a magnetorheological clutch outer cylinder (10) for connecting the lifting lug outer cylinder (1) and a ball screw outer cylinder (17) and encapsulating the magnetorheological clutch; a magnetorheological clutch connected to the motor rotor (2) for converting the motor torque into a variable active torque and adjusting the damping force and the inertia; a magnetic part (8) for forming a variable magnetic field in the magnetorheological clutch and adjusting the transmitted torque; a screw (18) connected to the magnetorheological clutch and transmitting the adjustable active torque of the magnetorheological clutch; an output rod (16) for converting the rotational motion of the screw into axial motion and transmitting the axial force; and a ball screw outer cylinder (17) connected to the magnetorheological clutch outer cylinder (10) and sealing the magnetorheological clutch and the output rod.

2. The magnetorheological active suspension with adjustable inertia according to claim 1, characterized in that: The motor rotor (2) is installed between the lifting ear outer cylinder (1) and the magnetorheological clutch, and the magnetorheological clutch comprises: a rotor support A (3) for connecting the motor rotor (2) and the magnetorheological clutch stator (6) to transmit the main torque of the motor to the magnetorheological clutch; a rotor bearing A (4) for connecting the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) to enable the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) to rotate relative to each other; a rotor bearing B (5) for connecting the magnetorheological clutch stator (6) and the magnetorheological clutch rotor The magnetorheological clutch stator (14) is used to enable the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14) to rotate relative to each other; the magnetorheological clutch stator (6) is fixedly connected to the rotor support (3) and is used to rotate or stop relative to the magnetorheological clutch rotor (14) and the rotor disk (9) to control the transmission of active torque; the axial seal A (7) is used to seal the magnetorheological fluid between the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14); the magnetic part (8) is used to form a controllable magnetic field between the magnetorheological clutch stator (6), the magnetorheological clutch rotor (14) and the rotor disk (9) to adjust the transmission torque. output torque; a rotor disk (9), connected to a magnetorheological clutch rotor (14), having a magnetorheological medium between the rotor disk (9) and the magnetorheological clutch stator (6), for rotating or being stationary relative to the magnetorheological clutch stator (6), and transmitting a variable torque to the magnetorheological clutch rotor (14); a magnetorheological clutch rotor (14), connected to a lead screw (18) and the rotor disk (9), for transmitting a variable torque to a ball screw pair; an axial seal B (11), for sealing a magnetorheological fluid between the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14); a rotor support B (15), connected to the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14); The magnetorheological clutch rotor (14) is connected to the magnetorheological clutch rotor (14) to connect and fix the magnetorheological clutch rotor (14) with the rotor bearing C (12) and the rotor bearing D (13); the rotor bearing C (12) is used to connect the magnetorheological clutch rotor (14) with the magnetorheological clutch stator (6) so that the rheological damper rotor (14) and the magnetorheological clutch stator (6) can rotate relative to each other; the rotor bearing D (13) is used to connect the magnetorheological clutch stator (6) with the magnetorheological clutch outer cylinder (10) so that the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) can rotate relative to each other.

3. The magnetorheological active suspension with adjustable inertia according to claim 1, characterized in that: The motor rotor (2) is installed between the ball screw outer cylinder (17) and the magnetorheological clutch; the magnetorheological clutch comprises: a rotor support B (15) for connecting the motor rotor (2) and the magnetorheological clutch stator (6) to transmit the main torque of the motor to the magnetorheological clutch; a rotor bearing D (13) for connecting the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) to enable the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) to rotate relative to each other; a rotor bearing C (12) for connecting the magnetorheological clutch stator (6) and the magnetorheological clutch The magnetorheological clutch rotor (14) is provided with a magnetorheological clutch rotor (14) to enable the motor rotor (3) and the magnetorheological clutch rotor (14) to rotate relative to each other; the magnetorheological clutch stator (6) is fixedly connected to the rotor support B (15) and is relatively rotated or stationary with the magnetorheological clutch rotor (14) and the rotor disk (9) to control the transmission of active torque; the axial seal A (7) is used to seal the magnetorheological fluid between the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14); the magnetic part (8) is used to form a controllable magnetic field between the magnetorheological clutch stator (6), the magnetorheological clutch rotor (14) and the rotor disk (9) to adjust the transmission torque. The magnetorheological clutch rotor (14) is connected to the magnetorheological clutch rotor (14), and a magnetorheological medium is present between the magnetorheological clutch stator (6), so as to rotate or stop relative to the magnetorheological clutch stator (6) and transmit a variable torque to the magnetorheological clutch rotor (14); the magnetorheological clutch rotor (14) is connected to the lead screw (18) and the rotor disk (9), so as to transmit the variable torque to the ball screw pair; an axial seal B (11), so as to seal the magnetorheological fluid between the magnetorheological clutch stator (6) and the magnetorheological clutch rotor (14); a rotor support A (15), so as to rotate relative to the magnetorheological clutch stator (6) or stop relative to the magnetorheological clutch stator (6), and transmit a variable torque to the magnetorheological clutch rotor (14); The magnetorheological clutch rotor (14) is connected to the magnetorheological clutch rotor (14) to connect and fix the magnetorheological clutch rotor (14) with the rotor bearing C (12) and the rotor bearing D (13); the rotor bearing B (5) is used to connect the magnetorheological clutch rotor (14) with the magnetorheological clutch stator (6) so that the rheological damper rotor (14) and the magnetorheological clutch stator (6) can rotate relative to each other; the rotor bearing A (4) is used to connect the magnetorheological clutch stator (6) with the magnetorheological clutch outer cylinder (10) so that the magnetorheological clutch stator (6) and the magnetorheological clutch outer cylinder (10) can rotate relative to each other.

4. The magnetorheological active suspension with adjustable inertia according to claim 2 or 3, characterized in that: The magnetorheological clutch stator (6), the magnetic part (8), the rotor disk (9) and the magnetorheological clutch rotor (14) cooperate to form a magnetorheological flow channel; the rotor disk (9) is fixedly connected to the magnetorheological rotor (14) and can rotate relative to the magnetorheological clutch stator (6), and transmits torque by shearing the magnetorheological medium in the magnetorheological flow channel.

5. The magnetorheological active suspension with adjustable inertia according to claim 4, characterized in that: The lead screw (18) and the lower end of the output rod (16) together form a ball screw pair. The lead screw (18) rotates with the magnetorheological clutch rotor (14) to transmit an adjustable active torque to the output rod (16). A guide structure is provided between the output rod (16) and the ball screw outer cylinder (17). The guide structure expands and contracts axially with the rotation of the lead screw (18) and converts the adjustable active torque into an axially adjustable active force.

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