基于MC68HC908AB32的电动助力转向系统  

Electric Power Steering System based on MC68HC908AB32

作　　者：梁秀霞[1] 刘志伟[1] 谢涛娟[1] 刘俊峰[1] 

机构地区：[1]河北工业大学,天津300130

出　　处：《电力电子技术》2006年第6期74-76,共3页Power Electronics

基　　金：河北省自然科学基金资助项目(600054)~~

摘　　要：电动助力转向(ElectricPowerSteering,简称EPS)控制系统是汽车转向系统发展的必然趋势。本文阐述了其基本组成及工作原理;设计了一种利用MC68HC908AB32单片机控制的汽车电动助力转向系统;介绍了其硬件组成及软件结构;采用PID控制策略对电机电流进行闭环控制;利用PWM技术控制电机的电压,以调节助力电流的大小,达到智能转向的目的。实验结果表明,该系统具有良好的助力特性,并通过了装车实验。The Electric Power Steering （EPS） System is the necessary trend of automobile steering system.This paper Sets forth the basic structure and work principle of the system ,designs an automobile electric power steering system based on MC68HC908AB32 micro-controller,introduces its hardware form and software frame, adopts PID control strategy to carry through closed loop control for motor current, and makes usage of PWM technique controlling motor voltage to adjust power current for the purpose of aptitude steering.The result of experiment makes clear that the system has well power characteristic and passes the experiment on automobile.

关 键 词：汽车 控制 脉宽调制 控制器/电动助力转向 

分 类 号：TM921.5[电气工程—电力电子与电力传动]