Body attitude adaptive adjustment active suspension actuator, system and control method

An adaptive adjustment, active suspension technology, applied in suspension, elastic suspension, vehicle components, etc., can solve problems such as pressure loss, high risk of oil leakage, long oil pipelines, etc., to attenuate shock and vibration , to avoid the effect of excessive temperature

Active Publication Date: 2022-04-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing hydraulic active suspension actuator motors, hydraulic pumps and oil pipelines are arranged on the vehicle body, the integration of components is low, and a large layout space is required, and because the oil pipeline is long, there is a certain pressure There is also a greater risk of loss and damage leading to oil spills

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  • Body attitude adaptive adjustment active suspension actuator, system and control method
  • Body attitude adaptive adjustment active suspension actuator, system and control method

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specific Embodiment approach

[0038] In order to clearly and completely describe the technical solution of the present invention and its specific working process, with reference to the accompanying drawings, the specific embodiments of the present invention are as follows:

[0039] In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] In the...

Embodiment 1

[0043] The first embodiment discloses an active suspension actuator for self-adaptive adjustment of body posture, such as figure 1 As shown, the active suspension actuator includes: motor 10, hydraulic pump 9, oil storage cylinder 2, intermediate cylinder 3, working cylinder 4, piston head 5, piston rod 1, unloading valve 6, inner throttle valve 7 , the outer throttle valve 8, the inner accumulator 16 and the outer accumulator 17; wherein:

[0044]The piston head 5 is installed in the working cylinder 4, the outer circumference of the piston head 5 is sealingly connected with the inner side wall of the working cylinder 4, the piston rod 1 is vertically installed at the middle position of the outer end face of the piston head 5, and the working cylinder 4 Among them, the rod cavity where the piston rod 1 is located, that is, the cavity formed between the outer end face of the piston head 5 and the working cylinder 4 is the recovery cavity 11, and the rodless cavity of the worki...

Embodiment 2

[0051] The second embodiment discloses a control method for adaptively adjusting the body posture of an active suspension actuator, where the active suspension actuator is the active suspension actuator described in the first embodiment, and the specific control process is as follows:

[0052] When it is detected that the wheel is about to travel to the bump on the road, the control motor 10 rotates clockwise to drive the hydraulic pump 9 to rotate clockwise, and the hydraulic pump 9 pushes the oil through the intermediate oil circuit 15 into the inner oil circuit 13, and then measures the oil from the inside. The passage 13 passes through the inner throttle valve 7 and the oil storage cavity in turn, and finally flows into the recovery cavity 11. The oil pressure in the recovery cavity 11 increases, pushing the piston head 5 to the side of the compression cavity 12, which in turn drives the The piston rod 1 is retracted inward to reduce the height of the vehicle body, so as to...

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Abstract

The invention discloses an active suspension actuator, a system and a control method for self-adapting adjustment of body attitude. In the active suspension actuator, the oil storage inner chamber communicated with the rod-mounted recovery chamber is connected with the inner accumulator via the inner oil circuit through the inner throttle valve, and the oil storage outer chamber communicated with the rodless compression chamber The outer throttle valve is connected to the outer accumulator through the outer oil circuit. There is an unloading valve between the recovery chamber and the compression chamber. The inner oil circuit and the outer oil circuit are respectively connected to the two oil ports of the hydraulic pump. The pump is coaxially connected; the active suspension system includes an active suspension actuator, a controller connected to the motor in turn, and a road surface roughness detection unit; the control method includes driving the vehicle to a road surface bump or a road surface pit, and the wheel The process of controlling the attitude of the vehicle body by the active suspension actuator when it is impacted. The invention actively changes the action of the pressure control actuator in the two chambers of the actuator working cylinder under the excitation of the unevenness of the road surface, and realizes the active adjustment of the posture of the vehicle body.

Description

technical field [0001] The invention belongs to the technical field of structural design of an automobile active suspension system, and in particular relates to an active suspension actuator, a system and a control method for self-adaptive adjustment of body posture. Background technique [0002] The concept of active suspension was first proposed by Federspiel-Labrosse in Germany. The stiffness of the spring and the damping of the shock absorber in the active suspension can be adjusted in real time according to the driving conditions, which greatly improves the shock absorption capacity of the suspension. At present, active suspension mainly includes three types: electromagnetic active suspension, air adjustable suspension and hydraulic active suspension. [0003] Electromagnetic active suspension uses electric or hydraulic force generators to replace shock absorbers and springs in passive suspensions, but its weight is heavy and maintenance costs are high. [0004] The ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G17/0165B60G17/08
CPCB60G17/0165B60G17/08B60G2400/821B60G2800/912
Inventor 赵世杰王杨宋润泽郭孔辉
Owner JILIN UNIV
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