汽车前轮转向角测量系统设计
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密 惠 保
摘 要
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电动助力转向系统(Electric Power Steering System，简称EPS)，是汽车工程领域的热门课题之一。本文在研究了电动助力转向系统工作原理的基础上，设计开发了EPS的电子控制单元ECU (Electronic Control Unit)的硬件电路和相应的控制软件框图。
本文详细分析了电动助力转向系统电子控制单元的功能，研究开发了以
在研制了实验用ECU装置后，开发了相应的控制软件。控制软件分为控制策略的实现和数据信号采集与分析两部分。整个软件系统采用了模块化的设计思想。在数据信号采集与控制部分，设计了系统主程序、A/D采集程序、车速信号采集程序和PWM控制程序。
[来源：http://think58.com]
本文所设计的EPS电子控制单元性能稳定，结构合理，与整车匹配性能好，可保证EPS实现良好的转向助力效果。
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关键词
电动助力转向 电子控制单元 单片机 控制策略
[资料来源：http://think58.com]
Abstract
Electric Power Steering System (EPS) is one of the focuses research in automotive engineering.This paper is based on the principles of EPS to study the operation, designed and developed the Electronic Control Unit (ECU) and the soft ware diagram of the ECU.
The thesis Considers the functions of the electronic control unit of EPS, studied and developed the hardware that adopted
The software program, which was divided into the realization of control strategy and the acquisition&control of data/signal, was developed in modular after thedesign of experimental ECU was completed. And the main program, A/D acquisition program, speed signal acquisition program and PWM control program are developed in the second part.
The result showed that the electronic control unitdesigned was with stable performance, appropriate structure and excellent matchingcondition, and the excellent power steering effect could be ensured by EPS.
Key words: Electric Power Steering System (EPS) Electronic Control Unit
Single-Chip Microprocessor Control Strategy
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