主动悬架H_∞/广义H_2积分切换面自适应滑模控制研究  

Adaptive Sliding Control of H_∞/Generalized H_2 Integral Switching Surface for Active Suspension

作　　者：刘树博[1] 罗先喜[1] 万智辉[1] 

机构地区：[1]东华理工大学江西省新能源工艺及装备工程技术研究中心,江西南昌330013

出　　处：《机械设计与制造》2014年第12期234-237,共4页Machinery Design & Manufacture

基　　金：江西省自然科学基金(20114BAB201024);博士科研启动基金项目(DHBK1015)

摘　　要：悬架是车轮与车辆承载系统之间的弹性连接装置的统称,是现代车辆重要组成部分之一。以四分之一汽车动力学模型作为研究对象,设计一种带有积分切换面的自适应滑模控制器。所设计的H∞/广义H2积分型切换面能够有效地改善悬架系统的动态性能,使其对非匹配外界路面扰动具有不敏感性。并且通过设计一种自适应律,实现对不确定路面扰动的辨识估计,提高了系统的实用性。将控制器的性能与被动悬架系统、H∞/广义H2主动悬架进行了对比,仿真结果证实了控制器的有效性。Suspension is the elastic connection between the wheels and vehicle carrying system device, being an important part of modern vehicles. Aimed at active suspension of a quarter-car model, an adaptive sliding mode controller with integral switching surface is designed. Firstly, the H∞/generalized H2 integral switching surface is proposed to improve the dynamic performance and makes the system be insensitive to external, mismatched disturbance. Secondly, an adaptive law is designed to achieve the identification of the road mismatched uncertainties and improve the practicability of the control system. The performance of the controller has been compared with the passive system and the H∞/generaized H2 active suspension system. A simulation study was performed to prove the effectiveness of the control approach.

关 键 词：主动悬架 非匹配扰动 滑模控制 自适应律 

分 类 号：TH16[机械工程—机械制造及自动化] U463.33[机械工程—车辆工程]