摘要
分析了电动助力转向系统各组成部分的数学模型,建立了基于Matlab/Simulink的电动助力转向系统仿真模型。构建了电动助力转向系统的两层控制策略,上层控制策略采用基本助力控制和补偿控制的方法确定目标电流,下层控制策略通过PID调节器完成对目标电流的准确跟踪控制。仿真结果表明,设计的控制策略解决了转向轻便性和路感的问题,同时改善了转向的动态效果和回正能力。
The mathematic models of electric power steering system were analyzed and the simulation model based on Matlab/Simulink was built. Two layers control strategies were proposed, which are top layer control strategy and bottom layer control strategy.The top layer control strategy calculates the target current by the methods of basic assist control and compensation control, and the bottom layer control strategy regulates the actual current to track the target current by the PID controller. The simulation results showed that the problems of steering easiness and road feel were solved, the steering dynamic effect was improved, and the return ability was increased.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2007年第7期5-9,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
北京市科委奥运用电动客车项目(项目编号:D0305002040111)
关键词
车辆
电动助力转向
数学模型
补偿控制
Vehicle, Electric power steering, Mathematic model, Compensation control
