Vehicle semi-active suspension hybrid control method based on damping multi-mode switching vibration damper

A technology of semi-active suspension and control method, which is applied in the field of vehicle suspension control, and can solve the problems of complex structure and high design cost of continuously adjustable damping shock absorbers

Active Publication Date: 2016-09-28
采埃孚汽车零部件系统(上海)有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Since damping continuously adjustable shock absorbers generally have the characteristics of high design cost and complex structure, the research and development of damping multi-mode switching shock absorbers with relatively simple structures has become a research hotspot in this field.

Method used

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  • Vehicle semi-active suspension hybrid control method based on damping multi-mode switching vibration damper
  • Vehicle semi-active suspension hybrid control method based on damping multi-mode switching vibration damper
  • Vehicle semi-active suspension hybrid control method based on damping multi-mode switching vibration damper

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Embodiment Construction

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] figure 1 Shown is a typical structural principle diagram of a damping multi-mode switching shock absorber whose on-off state of the switch solenoid valve determines the oil flow path of the shock absorber. The shock absorber changes the oil flow path of the shock absorber in the recovery stroke and the compression stroke by controlling the on-off state of the two switching solenoid valves 12 and 13 . For example, when the switch solenoid valve 12 is closed and the switch solenoid valve 13 is opened, during the recovery stroke, the oil in the recovery chamber 1 flows to the compression chamber 5 through two paths, one is through the recovery valve 4, and the other is through the single Direction valve 8 and switch solenoid valve 13; during the compression stroke, the oil in the compression chamber 5 also flows to the recovery chamber 1 thr...

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Abstract

The invention proposes a vehicle semi-active suspension hybrid control method based on a damping multi-mode switching vibration damper, and the method comprises the steps: (1), building a damping nonlinear characteristic mathematical model of a vibration damper according to the structural principle of the damping multi-mode switching vibration damper; (2), carrying out the simulation analysis of the damping nonlinear characteristic mathematical model of the vibration damper, obtaining the speed characteristic curve of the vibration damper, and determining the restoration damping coefficient and compression damping coefficient of the vibration damper in each damping working mode; (3), building a vehicle semi-active suspension hybrid dynamic model comprising the damping multi-mode switching vibration damper based on a hybrid logic dynamic modeling method; (4), combing with the requirements of suspension system control, and completing the design of a vehicle semi-active suspension hybrid model prediction controller. Compared with the prior art, the method can achieve the effective control of a vehicle semi-active suspension comprising the damping multi-mode switching vibration damper, improves the actual control performance of a vehicle semi-active suspension system, is lower in implementation cost of a control strategy, is strong in actual application capability, and is remarkable in advantages.

Description

technical field [0001] The invention belongs to the field of vehicle suspension control, and in particular relates to a hybrid control method for a vehicle semi-active suspension based on a damping multi-mode switching shock absorber. Depending on the state, the control method is hybrid model predictive control. Background technique [0002] As an important part of the chassis system, the suspension is the key to ensure the ride comfort, handling stability and driving safety of the vehicle. Therefore, the research on the improvement of the suspension performance has always been one of the focuses of the automotive engineering community. In recent years, active / semi-active suspension integrating advanced electronic control technology has attracted extensive attention from scholars in the industry. Active suspension can greatly improve the performance of the suspension by directly controlling the power of the actuator, but the high cost and high energy consumption have become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 孙晓强
Owner 采埃孚汽车零部件系统(上海)有限公司
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