电动助力转向系统的设计与开发  

Design and Exploitation of Electric Power Steering System

作　　者：张云安[1] 马瑞卿[1] 符向荣[1] 杨平[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《计算机测量与控制》2005年第6期551-552,576,共3页Computer Measurement &Control

摘　　要：电动助力转向是一种新型汽车动力转向技术。设计了一种采用P87C591单片机控制的汽车电动助力转向系统,给出了系统助力特性曲线,提出了一种简单的回正控制策略,采用模拟PID对电机输出电流进行闭环控制,利用PWM技术控制电机端电压大小达到调节电机电流的目的。试验表明该系统助力跟随性好、响应快、精度高,具有良好的电动助力转向性能,已通过了装车试验。Electric power steering is a new power steering technology for vehicles. An electric power steering system controlled by P87C591 microprocessor is designed. Assisted characteristic chart of the system and a simple returning control strategy are presented. The current is closed-loop controlled by analog PID and adjusted through altering the voltage over the motor by the technique of PWM. The results of experiments show the system designed has good following nature, quick response and high precision. The system has been put into practical experiment application and generally has favorable power steering characteristics.

关 键 词：电动助力转向系统 设计与开发 动力转向技术 单片机控制 新型汽车 特性曲线 控制策略 闭环控制 输出电流 电机电流 机端电压 技术控制 转向性能 装车试验 PID PWM 跟随性 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论] U463.4[自动化与计算机技术—计算机科学与技术]