GAO Zhong-hua1, CHEN Xi-hou2, YANG Ji-sen2, et al. Study on total error model and error correction method for linear time grating sensor[J]. 2012, 31(8): 87-89+93.
GAO Zhong-hua1, CHEN Xi-hou2, YANG Ji-sen2, et al. Study on total error model and error correction method for linear time grating sensor[J]. 2012, 31(8): 87-89+93. DOI: 10.13873/j.1000-97872012.08.031.
直线时栅传感器全误差模型与误差修正方法研究
摘要
为了进一步提高直线时栅位移传感器的测量精度
在建立该传感器周期误差、阿贝误差、热膨胀误差的全误差模型基础上
提出了一种组合校准的方法
利用傅里叶谐波分析和材料线膨胀原理对直线时栅的各种误差进行修正
修正后的精度可达±0.5μm/m。实验证明:该方法解决了直线测量中误差难以分离的问题
同时解决了计算机连续自动采样问题
提高了标定效率
使该方法广泛地应用于生产实践成为可能。
Abstract
A combined calibration method is presented
to improve the measuring precision of linear time grating displacement sensor.On the basis of setting up total error model of periodic errors
Abbe errors and thermal expansion errors
Fourier harmonic analysis and the principle of material liner expansion are used to correct errors.The precision reaches to ±0.5μm/m after calibrating.Experiments prove that this method solves the difficult issues of error separation in the linear measurement
and continuously automatic sampling with computer
so that the calibration efficiency is greatly enhanced
and it is possible to use this method widely in the production practice.
Turning angle sensor based on a periodic optical raster and photodetector matrix in full-frame mode [J] . D. A. Orlov,E. A. Neverova,S. V. Dmitriev. Measurement Techniques . 2011 (9)