Compensation for Dynamic Subdivision Error When the Grating Displacement Sensor Code Disk is Stained

doi:10.1109/JSEN.2022.3232708

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	Compensation for Dynamic Subdivision Error When the Grating Displacement Sensor Code Disk is Stained
	C. Zhao, Q. Wan and L. Liang
	2023
发表期刊	IEEE Sensors Journal
ISSN	1530437X
卷号	23 期号:3 页码:2403-2410
摘要	When the code disk of a displacement sensor gains dust or other impurities, its moiré fringe signal will deviate from the standard range, which increases subdivision error. In this study, a high-speed A/D converter was used to collect the moiré fringe signal of a sensor in real time and to extract the characteristic points. The center point trajectory of the moiré fringe signal Lissajous figure was calculated, and the amplitude values of the two moiré fringe signals were determined according to characteristic points. The moiré fringe signals according to the center point trajectory and signal amplitudes were then normalized. Error compensation of the dc level and amplitude of moiré fringe signals was realized, so as to improve the dynamic subdivision accuracy of moiré fringe signals when the code disk was stained. Experiments showed that, when the reading head was in the stained area of the code disk, the subdivision error of moiré fringe signals was reduced from the peak value of 37.2{\prime \prime } to 4.6{\prime \prime } , and the accuracy of the sensor can be improved using this algorithm for both different resolutions and different stains, which greatly improved the ability of the displacement sensor to adapt to a harsh environment. © 2001-2012 IEEE.
DOI	10.1109/JSEN.2022.3232708
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收录类别	sci ; ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68226
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C. Zhao, Q. Wan and L. Liang. Compensation for Dynamic Subdivision Error When the Grating Displacement Sensor Code Disk is Stained[J]. IEEE Sensors Journal,2023,23(3):2403-2410.
APA	C. Zhao, Q. Wan and L. Liang.(2023).Compensation for Dynamic Subdivision Error When the Grating Displacement Sensor Code Disk is Stained.IEEE Sensors Journal,23(3),2403-2410.
MLA	C. Zhao, Q. Wan and L. Liang."Compensation for Dynamic Subdivision Error When the Grating Displacement Sensor Code Disk is Stained".IEEE Sensors Journal 23.3(2023):2403-2410.

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