基于时栅传感技术的高分辨力磁编码器设计与研究  

Design and Research of High Resolution Magnetic Encoder Based on Time Grating Sensing Technology

作　　者：陈盛[1] 彭东林[1] 王淑娴[1] 王阳阳[1] 徐清华 CHEN Sheng;PENG Dong-lin;WANG Shu-xian;WANG Yang-yang;XU Qing-hua(Chongqing Key Laboratory of Time Grating Sensing and Advanced Detection Technology,Engineering Research Center of Mechanical Detection Technology and Equipment,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学机械检测技术与装备教育部工程研究中心时栅传感及先进检测技术重庆市重点实验室

出　　处：《组合机床与自动化加工技术》2018年第4期66-69,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(51475063;51675071);重庆市研究生创新基金(CYS16218;CYS17278);重庆理工大学研究生创新基金(YCX2016217;YCX2016214)

摘　　要：在现代工业中,磁编码器因具有防尘、抗震等特性被广泛应用,但其长期存在分辨力低的问题,在一定程度上制约了其在高精度、高分辨力领域的使用。文章通过采用隧道磁阻传感器(Tunnel magnetoresistance,TMR)作为磁敏元件,多极磁环为转动部件,并结合时栅位移传感器的信号处理技术,设计了一种高分辨力磁编码器以期解决这一问题。文中从理论上分析了这种编码器的测量原理,其次通过仿真分析对TMR安装位置的关键参数进行确定,最后对此编码器样机进行了实验,验证了测量方案的可行性。经样机实验测试,该新型磁编码器可实现0.1°的分辨力,较相同磁极数的传统编码器原始分辨力提高了7.5倍。In modern industry,the magnetic encoder is widely used because of its dustproof,seismic and other characteristics,but its long-term resolution is low,which restricts its use in the field of high precision and high resolution to some extent.By using the tunnel sensor(Tunnel magnetoresistance TMR)as the magnetic sensor,magnetic drum for rotating parts,combined with signal processing technology for time grating displacement sensor,the design of a new type of magnetic encoder in order to solve this problem.This paper analyzes the measuring principle of the encoder in theory,through the simulation analysis of key parameters of the TMR installation location identified by the end of this encoder experiment to verify the feasibility of the measurement program.Through the prototype test,the new magnetic encoder can achieve the resolution of 0.1 degrees,and the original resolution of the traditional encoder with the same magnetic pole number is increased by 7.5 times.

关 键 词：时栅 磁性编码器 角位移测量 

分 类 号：TH165[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]