基于模糊动态模型的半主动悬架控制系统设计及稳定性分析  

Control System Design and Stability Analysis of Semi-active Suspension Based on Fuzzy Dynamic Model

作　　者：陈龙[1] 周立开[1] 江浩斌[1] 汪若尘[1] 周孔亢[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《机械工程学报》2008年第2期113-117,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50275064);江苏省国际合作(BZ2003034);江苏省高新技术(BG2004025)资助项目

摘　　要：在可调减振器性能试验的基础上,建立1/4悬架模糊动态模型,提出一种基于模糊动态模型的半主动悬架控制系统及稳定性分析方法。利用Lyapunov稳定性定理,分析每个模糊子空间闭环系统的稳定性,根据每个模糊子系统稳定性条件,给出模糊控制系统全局稳定的充分条件。以半主动悬架系统仿真计算为基础,开发出以80C51单片机为核心的控制器,研制1/4车辆半主动悬架1∶1台架试验系统,并进行台架试验。计算和试验结果基本吻合,基于模糊动态模型的半主动悬架控制系统稳定、有效,为半主动悬架系统的失稳机理及稳定性控制进一步研究奠定了基础。Based on performance test of the damper, a quarter vehicle fuzzy dynamic model is founded. A new method on design and stability analysis of semi-active suspension fuzzy control system is presented. Using Lyapunov stability theory, every fuzzy subspace stability of closed loop system is analyzed, then stable condition of whole fuzzy control system is gained. The controller whose core is 80C51 is developed up. The bench test system of quarter semi-active suspension is designed in 1 ： 1 size, and the bench tests are done. The results of experimsent and simulation are consistent and effective by and large. The fuzzy control system of semi-active suspension is effective and stable, which provides the basic for further study on stability mechanism of semi-active suspension control system.

关 键 词：模糊动态模型 半主动悬架 模糊控制系统 稳定性 

分 类 号：U463.33[机械工程—车辆工程]