基于磁弹性效应的电动转向轴用新型扭矩传感器  

New Type of Torque Sensor for Electronic Steering Shaft Based on Magnetoelastic Effect

作　　者：文西芹[1] 李纪明[1] 

机构地区：[1]淮海工学院,江苏连云港222005

出　　处：《仪表技术与传感器》2011年第1期5-7,48,共4页Instrument Technique and Sensor

基　　金：江苏省教育厅自然科学基金项目(07JKD460075)

摘　　要：在汽车电动转向器(EPS)中,非接触式扭矩传感器起着极为重要的作用。这些扭矩传感器的开发一直是国内外众多专家研究的重点,文中提出了一种基于磁弹性效应的EPS系统转向轴用新型扭矩传感器,并对这种传感器的一些基本特性(相对磁导率和气隙、磁滞、扭矩及激励频率等不同参数影响下的传感器输出等)进行了探讨,特性分析表明,这种新型传感器具有磁滞小、气隙扰动小和灵敏度高的特点,能满足EPS系统的要求。In the electronic power steering system,the torque sensor plays an important role.The development of the torque sensor has been one of the key issues that involve the effects of many experts.A new type of torque sensor for steering shaft of EPS system based on magnetoelastic effect was proposed.The basic characteristics（such as relative permeability,hysteresis,and sensor output influenced by different factors such as air gap,torque and exciting frequency） of torque sensor were discussed.The analysis show that this new type of sensor,which have the characteristics of low hysteresis,smaller air-gap interference and high sensitivity,can satisfy the requirement of EPS system.

关 键 词：转向轴 磁滞 气隙 磁弹性扭矩传感器 

分 类 号：TP212.12[自动化与计算机技术—检测技术与自动化装置]