Error Compensation for Low-Density Circular Gratings Based on Linear Image-Type Angular Displacement Measurements

doi:10.1109/tie.2021.3139240

CIOMP OpenIR

	Error Compensation for Low-Density Circular Gratings Based on Linear Image-Type Angular Displacement Measurements
	H. Yu; Q. H. Wan; C. H. Zhao; Q. Y. Han and Z. Y. Mu
	2022
发表期刊	Ieee Transactions on Industrial Electronics
ISSN	0278-0046
卷号	69 期号:12 页码:13736-13743
摘要	The image-type angular displacement measurement method based on linear image recognition has garnered attention because of its higher frequency response, strong fault tolerance, and high robustness. In the small-size image angular displacement measuring device, due to the limited pixel size, the circular grating cannot place more lines when realizing single-channel absolute coding recognition on a small diameter grating disk. This leads to larger errors in angular displacement measurement when the line density of the grating disk is low. To improve the measurement accuracy of small-scale displacement, the present work aimed to reduce this error by studying the error compensation method involving low-density grating disks. First, the mechanism of linear image-type angular displacement measurements is described, and a measurement algorithm based on linear scan images is proposed. Second, the measurement error model for low-density grating disks is established according to the proposed measurement algorithm. Third, a simplified error compensation algorithm based on a harmonic model is developed. Finally, simulations and experiments are performed to verify the performance of the proposed algorithm. Simulation results show that the developed harmonic compensation algorithm can effectively reduce the error caused by the low-density circular grating. When the proposed error compensation algorithm is applied to a grating disk with a 62 mm diameter and 2(N) lines, the measurement accuracy is improved from 8.14" to 4.78". The proposed error compensation algorithm can significantly improve the accuracy of linear image-type angular displacement measurements involving low-density grating disks, and the results presented herein laid a foundation for improving the accuracy and engineering applicability of angular displacement measurement technology.￥internal-pdf://2336008147/Error Compensation for Low-Density Circular Gr.pdf￥10.1109/tie.2021.3139240￥https://ieeexplore.ieee.org/stampPDF/getPDF.jsp?tp=&arnumber=9673116&ref=￥英语￥sci&ei
DOI	10.1109/tie.2021.3139240
URL	查看原文
收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66640
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	H. Yu,Q. H. Wan,C. H. Zhao,et al. Error Compensation for Low-Density Circular Gratings Based on Linear Image-Type Angular Displacement Measurements[J]. Ieee Transactions on Industrial Electronics,2022,69(12):13736-13743.
APA	H. Yu,Q. H. Wan,C. H. Zhao,&Q. Y. Han and Z. Y. Mu.(2022).Error Compensation for Low-Density Circular Gratings Based on Linear Image-Type Angular Displacement Measurements.Ieee Transactions on Industrial Electronics,69(12),13736-13743.
MLA	H. Yu,et al."Error Compensation for Low-Density Circular Gratings Based on Linear Image-Type Angular Displacement Measurements".Ieee Transactions on Industrial Electronics 69.12(2022):13736-13743.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Error Compensation f（2058KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载