电动助力转向系统电感式转矩传感器的研究  

Study on Inductive Torque Sensor Used in EPS

作　　者：季学武[1] 刘学[2] 孙凌玉[2] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室 [2]北京航空航天大学汽车工程系

出　　处：《传感器世界》2007年第2期11-14,共4页Sensor World

摘　　要：转矩传感器是汽车电动助力转向(EPS)系统的关键部件之一,其输出特性直接影响到EPS系统的控制性能。本文介绍了一种电感式转向盘转矩传感器原理,采用Ansoft对其磁场进行了分析,设计了传感器的信号调理电路,并通过实验对传感器的输出进行了标定,给出了传感器的输出特性曲线。实验结果表明,传感器各项性能满足EPS系统的要求。The torque sensor is one of the key parts of an electric power steering （EPS） system, and the characteristic of EPS system is much concerned with the output of the torque sensor. The principle of an inductive steering torque sensor was proposed; the 3D DC magnetic field of the sensor was analyzed, and the signal conditioning circuit was designed. Calibration tests were carried out, it has been found that the sensor has excellent output characteristic, and could satisfy the requirement of performance for EPS torque sensor.

关 键 词：电动助力转向系统 电感式 转矩传感器 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]