基于EPS信号完整性研究与设计  

Research and Design of Signal Integrity Based on EPS

作　　者：黄瑞 刘锴 潘亮 文礼 丁伟娜 HUANG Rui;LIU Kai;PANG Liang;WEN Li;DING Weina(Hunan Dongjia Intelligent Technology Co.,Ltd.,Zhuzhou Hunan 412000,China)

机构地区：[1]湖南东嘉智能科技有限公司,湖南株洲412000

出　　处：《汽车零部件》2022年第11期30-35,共6页Automobile Parts

摘　　要：为了消除或减缓电动助力转向(EPS)系统的电子控制器的信号反射问题,本文在该电控系统下对瞬态阻抗不恒定产生的信号的过冲、下冲、振铃、回勾等现象进行分析和验证;探讨了信号反射产生的原因,并对电子助力转向系统控制器(ECU)进行了信号完整性设计;最后通过实例驱动永磁同步电机电路对信号完整性进行了验证。从而解决了互连、电源、器件等引起的信号波形畸变问题,符合系统对信号质量的要求,对设计EPS系统具有一定的参考。In order to eliminate or slow down the signal reflection of the electronic controller of the electric power steering(EPS)system,the phenomena of overshoot,undershoot,ringing and hookback of the signal caused by unstable transient impedance were analyzed and verified under the electronic control system.The causes of signal reflection were discussed,then the signal integrity of the electronic power steering system controller(ECU)was designed.Finally,the signal integrity was verified by driving the permanent magnet synchronous motor circuit with an example.It solves the problem of signal waveform distortion caused by interconnection,power supply,devices,etc.It meets the requirements of the system for signal quality and has a certain reference for the design of EPS system.

关 键 词：电动助力转向系统 信号反射 过冲 振铃 信号完整性 

分 类 号：TM935[电气工程—电力电子与电力传动]