基于模糊自调整PD控制的EPS助力特性  

Study on EPS Assisted Steering Characteristics Using PD Auto-tuning Technique and Fuzzy Set

作　　者：王启瑞[1] 黄森仁[1] 陈无畏[1] 杨孝剑[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院

出　　处：《农业机械学报》2004年第4期1-4,15,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:5027504);安徽省"十五"科技攻关资助项目(项目编号:01012015);江苏省汽车重点实验室开放基金资助项目(项目编号:KJS01087)

摘　　要：在对 EPS的结构及其动力特性进行分析的基础上 ,建立其运动方程 ,设计了一种双模糊表自调整 PD控制器 ,可使 EPS实现理想的助力特性。对其进行了仿真计算 ,结果表明这种模糊自调整 PD控制器与单独 PD控制器相比 ,具有更好的控制效果和鲁棒性。By analyzing an electrical power steering system (EPS) structure and its dynamical characteristics, this paper presents an improved PD control method based on double fuzzy sets and auto-tuning techniques. In order to overcome the conflict between steering portability and sensitiveness and obtain ideal EPS assist steering characteristics, the PD parameters should be adjusted online in different circumstances and ideal PD parameters can be acquired. The simulations of the improved PD controller and the conventional one were carried out. The results show that the improved PD controller is more effective and robust than the conventional PD one.

关 键 词：电动助力转向系统 EPS 汽车 助力特性 双模糊表自调整PD控制器 数学模型 仿真计算 

分 类 号：U463.44[机械工程—车辆工程] TP273.4[交通运输工程—载运工具运用工程]