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Automobile suspension shock absorber control system and method

A technology of automobile suspension and control system, applied in suspension, elastic suspension, vehicle parts, etc., can solve the problem of difficult closed-loop control of magnetorheological shock absorbers

Active Publication Date: 2015-12-23
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the magneto-rheological shock absorber in the prior art is difficult to realize the closed-loop control, and proposes a control system and method for the automobile suspension shock absorber

Method used

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  • Automobile suspension shock absorber control system and method
  • Automobile suspension shock absorber control system and method
  • Automobile suspension shock absorber control system and method

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Embodiment Construction

[0028] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] The invention provides an automobile suspension shock absorber control system, such as figure 1 As shown, it includes a body vertical vibration acceleration sensor, a state observer, a controller and a magnetorheological damper; the controller, the magnetorheological damper, and the body vertical vibration acceleration sensor are connected in sequence, and the body vertical vibration acceleration The sensor, the controller, and the magnetorheological damper are respectively connected with the state observer.

[0030] Among them, the body vertical vibration acceleration sensor is used to collect the vertical vibration state y of the car in real time and send it to the state observer.

[0031] The state observer is used for the vertical vibration state y of the vehicle collected by the body vertical vibration acceleration sensor and the current v...

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Abstract

The invention discloses an automobile suspension shock absorber control system and method. The automobile suspension shock absorber control system comprises an automobile body vertical vibration acceleration sensor, a state observer, a controller and a magnetorheological shock absorber. The state observer can recognize and predict the running state of an automobile body and the running road condition only according to an automobile body vertical vibration acceleration sensor signal, and other on-board sensors are not needed. The controller adjusts the current value of an electromagnetic coil in a piston rod of the magnetorheological shock absorber in real time according to an estimated result of the state observer, and then real-time control over the performance of the magnetorheological shock absorber is achieved. The automobile suspension shock absorber control system has good working conditions all the time under various automobile conditions and road conditions, is suitable for various road and non-road vehicles, and is especially suitable for the high-end passenger automobile and new energy automobile market.

Description

technical field [0001] The invention belongs to the technical field of automobile shock absorbers, and in particular relates to the design of a control system and method for a shock absorber of an automobile suspension. Background technique [0002] The automobile shock absorber is installed between the frame and the axle, and is mainly used to suppress the shock when the spring rebounds after shock absorption and the impact from the road surface, so that the vehicle can quickly return to the normal driving state. [0003] The liquid in the piston of the magnetorheological shock absorber is a kind of magnetic soft particle suspension. The change of the magnetic field of the electromagnetic coil in the piston rod is used to control its rheological characteristics, thereby generating a damping force with rapid response and strong controllability. The magnetorheological shock absorber has the characteristics of adjustable damping force and compact structure, but requires extern...

Claims

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Application Information

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IPC IPC(8): B60G17/018
Inventor 王铃燕丁渭平刘丛志杨明亮向伟
Owner SOUTHWEST JIAOTONG UNIV
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