基于单个读数头的角位移传感器自标定方法  

A Self-Calibration Method of Angular Displacement Sensor Based on Single Reading Head

作　　者：陈锡侯[1] 苟李 官云丽 索龙博 周全[1] 

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,重庆400050

出　　处：《传感技术学报》2014年第8期1049-1053,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(51005263)

摘　　要：在保证角位移传感器自标定精度的前提下,为克服多读数头安装的一致性问题,同时尽可能避免对标定系统硬件上的苛刻要求,提出一种基于单个读数头,借助测量数据微商的傅里叶级数,实现角位移传感器自标定的方法。推导了该自标定方法引入的误差,并据此提出一种对应的优化方法。将其应用于时栅角位移传感器的标定中,实验结果表明,在相同测量环境下,该自标定方法的标定精度接近借助外部参考基准的传统标定方法,达到约±0.8″;优化后的自标定方法能够有效提高标定精度与标定效率,并且在大微元长度快速标定时,其标定精度可优于传统标定方法接近5倍。On the premise of guarantee the angular displacement sensor calibration precision,in order to overcome the problem of multiple independent reading heads installed consistency,and to avoid those strict requirements of the calibration system,a new method of self-calibration is put forward,which is based on the system with single reading head and the Fourier Series of derivative of the measure data.Error formula has been deduced,and a corresponding optimization method is proposed.When it is applied to the calibration of Time Grating angular displacement sensor,the experimental results show that under the same measurement environment,the precision of the self-cali-bration method,which achieve ±0.8″,is close to that of traditional harmonic analysis method.The optimized self-calibration method can effectively improve the precision and the efficiency. What is more,when it is carried out under the long infinitesimal length,the precision of optimized self-calibration method could be 5 times better than that of traditional one.

关 键 词：自标定 微商 傅里叶分析 角位移传感器 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]