汽车EPS磁阻式转矩传感器的研制

Design of Magneto Resistive Torque Sensor in Automotive EPS

在分析国内EPS系统转矩传感器研究现状基础上,设计了一种基于各向异性磁阻效应理论的非接触式转向盘转矩传感器。通过标定试验建立了该传感器转矩与磁场角度的关系,并在硬件在环试验台上对其功能进行验证。试验分析表明,所设计转矩传感器综合性能能够满足EPS系统的要求。

Based on analysis of the domestic torque sensors used in EPS system, a non-contact type steering wheel torque sensor has been designed based on anisotropic magneto resistive effect theory. The relationship between sensor torque and magnetic field angle has been built by the calibration experiments, finally the function of the torque sensor has been tested at the HIL test bench. The sensor experimental analysis shows that comprehensive performance of the torque sensor basically meets requirement of EPS system.