Control method for automotive active suspension system

Abstract

The invention relates to a control method, in particular to a control method for an automotive active suspension system. The problem that design models are simple, and single-target control is mainly adopted in the conventional suspension control technologies, so that external uncertain disturbance and unmodeled dynamics cannot be coped with is solved. The control method specifically comprises the following steps of: establishing a nonlinear active suspension model; designing a nonlinear robust controller; and regulating gains k1, k2, epsilon1 and epsilon2 to ensure that all constraints are limited within a permissible range, namely to realize constraint control. The control method is used for the control and the stabilization of the automotive active suspension system.

Description

technical field

[0001] The invention relates to a control method, in particular to a control method for an automobile active suspension system. Background technique

[0002] Automotive active suspension system is a research hotspot in recent years. Its basic function is to improve driving comfort and enhance vehicle handling. Generally speaking, automobile suspension can be divided into three categories: passive suspension, semi-active suspension and active suspension. Passive suspension consists of basic springs and dampers placed between the body and the axle. Since the ability to improve driving comfort or enhance vehicle handling is a pair of performances that restrict each other, passive suspension can only improve one of the two performance indicators, and its ability is limited. Semi-active suspension systems have variable damping characteristics and can provide great improvements in controllability, however, due to passive operation, the improvement capabilities ar...

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