基于DSP的汽车电动转向控制系统研究  

The Development of Electric Power Steering System For Automotive Based On DSP

作　　者：吴文江[1] 温立志[1] 杜彦良 

机构地区：[1]石家庄铁道学院机械工程分院,河北石家庄050043

出　　处：《石家庄铁道学院学报》2004年第1期67-71,共5页Journal of Shijiazhuang Railway Institute

基　　金：江苏省汽车工程重点实验室开放基金(KJS01086)

摘　　要：阐述了电动转向系统的构成及工作原理,开发了以DSP为核心的电动转向控制系统。对系统的仿真发现系统的阻尼较小是造成系统振荡的原因,为了增加系统的阻尼,提出了对参考电流进行微分补偿的方法,并以此为依据设计了比例加微分控制器。仿真和实验结果证实,所设计的电动转向系统具有良好的稳定性能、跟踪性能和助力性能。The electric power steering system is presented in detail in this paper. An electric power steering control system based on DSP is designed. It is found that small damping ratio is the reason of control system vibration. In order to get a big damping ratio, a method of compensating the reference current with derivative is presented and a proportion-plus-derivative controller is designed with this method. The results of the simulation and test prove the control system has good performance in stability, tracking and assistance.

关 键 词：汽车工程 电动转向系统 微分补偿 控制器 DSP技术 稳定性能 跟踪性能 助力性能 

分 类 号：U463.4[机械工程—车辆工程]