Error-compensation of angular displacement measurement based on posteriori error fitting

doi:10.3788/OPE.20192701.0051

CIOMP OpenIR

	Error-compensation of angular displacement measurement based on posteriori error fitting
	H.Yu; Q.-H.Wan; C.-H.Zhao; X.-R.Lu; Y.-C.Du
	2019
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	27 期号:1 页码:51-57
摘要	In the aerospace, military, and industrial fields, which have strict requirements on the volumes of devices, photoelectric encoders require not only a reduction in the size and weight of the outer diameter, but also improvements in the measurement accuracy. In this study, an error compensation method for photoelectric encoders was investigated. The error model parameters were determined based on a posteriori error-fitting method, and then depth error compensation was performed for a small photoelectric encoder. First, the main factors that affect the angle measurement error of the photoelectric encoder were analyzed, and the long-and short-period error models were established. Then, a posteriori error-fitting error compensation algorithm was proposed. Finally, a small photoelectric encoder was tested to verify the performance of the proposed error compensation algorithm. The test results demonstrate that the proposed posteriori error-fitting compensation method can significantly reduce the angle measurement error of the photoelectric encoder. We utilized an encoder to verify this method. The accuracy before compensation is 22.48", and that after compensation is 5.82". This approach employs a posteriori error compensation method, which can directly compensate the encoder error without considering the sizes of the error factors, and possesses the advantages of high efficiency and accurate compensation. The product precision is considerably improved when the photoelectric encoder is mass produced. 2019, Science Press. All right reserved.
关键词	Error compensation,Angle measurement,Measurement errors,Photoelectricity,Signal encoding
DOI	10.3788/OPE.20192701.0051
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收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62859
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 of angular displacement measurement based on posteriori error fitting[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2019,27(1):51-57.
APA	H.Yu,Q.-H.Wan,C.-H.Zhao,X.-R.Lu,&Y.-C.Du.(2019).Error-compensation of angular displacement measurement based on posteriori error fitting.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,27(1),51-57.
MLA	H.Yu,et al."Error-compensation of angular displacement measurement based on posteriori error fitting".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 27.1(2019):51-57.

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