传感技术学报2017，Vol.30Issue(5)：692-696,5.DOI:10.3969/j.issn.1004-1699.2017.05.010
基于隧道磁阻效应的反正切转速测量方法
Method for Measuring the Rotation Speed of the Tunnel Based on the Tunneling Magnetoresistance Effect
摘要
Abstract
In view of the problems of low precision,low temperature stability and narrow measurement range of tradi-tional rotating speed test system,a high performance test system based on the effect of tunnel magnetic resistance ( TMR) is proposed. In the case of no error correction, the accuracy of 0. 19 degree position detection has been achieved. This method has reached the 2000 line encoder accuracy in engineering applications. In this method,the magnetic ring is arranged on the shaft to be measured,and the magnetic field is detected by the tunnel magnetore-sistive sensor with high resolution and high frequency response. The sine and cosine signals with the frequency change with the speed are obtained. In this paper,we use the method of the timing angle measurement method,the fixed angle time measurement method and the arc tangent methodto calculate the rotation speed. The results show that the arctangent algorithm has the highest detection accuracy of 1.25％,which is more suitable for the measure-ment system of the tunnel reluctance speed.关键词
转速测量/隧道磁阻传感器/反正切/环形磁栅Key words
rotational speed measurement/TMR sensor/anyway cut/toroidal magnetic gate分类
机械制造引用本文复制引用
蒋孝勇,李孟委,张晓峰,张加书,包旭馨..基于隧道磁阻效应的反正切转速测量方法[J].传感技术学报,2017,30(5):692-696,5.基金项目
总装预研基金项目 （）
国家自然基金项目( 61571405) （ 61571405）
