OPTIMAL LINEAR PREVIEW CONTROL OF ACTIVE VEHICLE SUSPENSION

被引：129

作者：

HAC, A

机构：

[1] Department of Mechanical Engineering, State University of New York at Stony Brook, N.Y. 11794, Stony Brook

来源：

VEHICLE SYSTEM DYNAMICS | 1992年 / 21卷 / 03期

关键词：

Control - Degrees of freedom (mechanics) - Optimization - Riding qualities;

D O I：

10.1080/00423119208969008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The problem of linear preview control of vehicle suspension is considered as a continuous time stochastic optimal control problem. In the proposed approach minimal a priori information about the road irregularities is assumed and measurement errors are taken into account. It is shown that estimation and control issues can be decoupled. The problem formulation and the analytical solution are given in a general form and hence they apply to other problems in which the system disturbances are unknown a priori, even in a stochastic sense, but some preview information is possible. The solution is applied to a two-degree-of-freedom (2-DOF) vehicle model. The effects of preview information on ride comfort, road holding, working space of the suspension and power requirements are examined in time and frequency domains. The results show that the greatest potential is for improving road holding properties. This effect could not have been observed in previous studies based on a 1-DOF vehicle model. It is also demonstrated that the presence of preview drastically reduces power requirements, thus relieving the performance versus actuator power dilemma.

引用

页码：167 / 195

页数：29

共 16 条

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