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

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...

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.

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