Design and Analysis of Curve-type Assistance Characteristics of Electric Power Steering System

Abstract

Abstract:

A method of segmeted parabola-type assistance characteristic was brought out to realize the curve-type assistance characteristics of the electric power steering system,and a single chip-microcomputer-based controller was designed to carry out the task.The mathematical model of single chip microcomputer control system was constructed,and Z transform was used to analyse the stability of the system.The test result shows that single chip microcomputer control system can realize the curve-type assistance characteristics.

Key words: electric power steering system;control system, curve-type;assistance characteristic

摘要：

将分段式抛物线作为助力特性曲线，实现了电动助力转向系统的曲线型助力功能，设计了能够实现曲线型助力的单片机控制系统。建立了单片机控制系统相应的数学模型，采用Z变换对系统的稳定性进行了分析。试验表明所设计的单片机控制系统能够实现曲线型助力功能。

关键词: 电动助力转向, 控制系统, 曲线型, 助力特性

CLC Number:

U469.72

He Ren, Geng Guoqing, Miao Lidong, Wang Cuiping. Design and Analysis of Curve-type Assistance Characteristics of Electric Power Steering System[J]. China Mechanical Engineering, 2007, 18(20): 2515-2518.

何仁, 耿国庆, 苗立东, 王翠萍, . 电动助力转向系统的曲线型助力特性设计及分析[J]. 中国机械工程, 2007, 18(20): 2515-2518.

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Design and Analysis of Curve-type Assistance Characteristics of Electric Power Steering System

电动助力转向系统的曲线型助力特性设计及分析

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