电动转向系统微波式扭矩传感器的研究  

Studу on Microwave Torque Sensor Used in EPS Sуstem

作　　者：马金元[1] 侯君[1] 

机构地区：[1]安阳工学院,河南安阳455000

出　　处：《仪表技术与传感器》2006年第12期1-3,共3页Instrument Technique and Sensor

基　　金：河南省高等学校青年骨干教师资助计划项目(2004-2007-199);河南省2006年科技发展计划项目(0624220025)

摘　　要：在汽车电动转向器中，为解决扭矩的高可靠性、低成本、小尺寸、高线性度测量问题，叙述了一种基于收发器技术的扭矩传感器的设计原理和特点，分析了该扭矩传感器的关键器件-收发器的制作步骤，提出了正弦耦舍窗的概念，建立了其数学模型的矩阵描述，给出了信号处理电路的参考模型。采用相位调制技术，可减小功率波动、安装朱对准度等误差。实验表明，在-40-12．5℃，线性度优于1％。In electric power steering, to solve the problem of driver-applied torque measurement which meet the stringent reliability, cost, and size requirements, the design principles and characteristics of the torque sensor based on transceiver were described. The parameter design of the key component coupling disk was discussed. A new concept of ＂Sinusoidal-coupling window＂and its implement step, and the matrix description of mathematical model were presented. A multi-channel system with an amplitude-to-phase conversion technique could minimize the errors caused by power variety or mechanical misalignment; The test results shown the linearity is no more than 1.0% at -40- 125℃.

关 键 词：电动转向系统 扭矩传感器 微波 相位调制 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]