A control system and method for an automobile suspension shock absorber
A control method and technology of automobile suspension, applied in suspension, elastic suspension, vehicle parts, etc., can solve the problem of difficult closed-loop control of magnetorheological shock absorbers
Active Publication Date: 2017-09-26
SOUTHWEST JIAOTONG UNIV
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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
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Embodiment Construction
[0028] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] The invention provides an automobile suspension shock absorber control system, such as figure 1 As shown, it includes the vehicle body vertical vibration acceleration sensor, state observer, controller and magnetorheological shock absorber; the controller, magnetorheological shock absorber, and vehicle body vertical vibration acceleration sensor are connected in sequence, and the vehicle body vertical vibration acceleration Sensors, controllers, and magneto-rheological dampers are connected to the state observer respectively.
[0030] Among them, the vehicle body vertical vibration acceleration sensor is used to collect the vertical vibration state y of the vehicle in real time and send it to the state observer.
[0031] The state observer is used to collect the vehicle vertical vibration state y collected by the vehicle body vertical vibration a...
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The invention discloses an automobile suspension shock absorber control system and method, comprising a vehicle body vertical vibration acceleration sensor, a state observer, a controller and a magneto-rheological shock absorber; the state observer is only based on the vehicle body vertical vibration acceleration sensor The signal can identify and predict the running state and road conditions of the car, without the need for other on-board sensors; the controller adjusts the current value in the electromagnetic coil in the piston rod of the magneto-rheological shock absorber in real time according to the estimation result of the state observer , and then realize the real-time control of the performance of the magneto-rheological shock absorber. The automotive suspension shock absorber control system has good working conditions in various vehicle conditions and road conditions, and is suitable for various road and non-road vehicles, especially for high-end passenger cars and new energy vehicle markets.
Description
technical field [0001] The invention belongs to the technical field of automobile shock absorbers, and in particular relates to the design of an automobile suspension shock absorber control system and method. 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 absorbing the shock 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 magneto-rheological shock absorber is a suspension of magnetic soft particles, which uses the change of the magnetic field of the electromagnetic coil in the piston rod to control its rheological characteristics, thereby producing a damping force with rapid response and strong controllability. The magneto-rheological shock absorber has the characteristics of adjustable damping force and compact structure, but it needs external energ...
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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