A method for compensating interpolation error of absolute linear encoder

	A method for compensating interpolation error of absolute linear encoder
	Qiao, D.; Z. Xu; H. Wu; Q. Zeng; Y. Liu and Q. Sun
	2015
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	35 期号:1
摘要	In order to improve the interpolation accuracy of the absolute linear encoder, a compensating method for the interpolation error is presented. By using the Fourier theory to analyze the A and B moire fringe signals, the moire fringe signal models for the absolute linear encoder is set up. By correcting the phase, amplitude, harmonics and direct current components of the signal modes, the ideal signal models are obtained. By comparing the interpolation position of the practical and ideal signal models, the interpolation error of the absolute linear encoder is obtained. After that, by compensating the interpolation position according to the obtained error, the interpolation accuracy can be improved remarkably. The JC09 absolute linear encoder is used to test and verify the presented method. The test results show that the interpolation relative error can be decreased from 2.70% to 1.05%. It demonstrates that this method can improve the interpolation accuracy significantly. In addition, due to the simple theory, the method can be easily realized. , 2015, Chinese Optical Society. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56185
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Qiao, D.,Z. Xu,H. Wu,et al. A method for compensating interpolation error of absolute linear encoder[J]. Guangxue Xuebao/Acta Optica Sinica,2015,35(1).
APA	Qiao, D.,Z. Xu,H. Wu,Q. Zeng,&Y. Liu and Q. Sun.(2015).A method for compensating interpolation error of absolute linear encoder.Guangxue Xuebao/Acta Optica Sinica,35(1).
MLA	Qiao, D.,et al."A method for compensating interpolation error of absolute linear encoder".Guangxue Xuebao/Acta Optica Sinica 35.1(2015).

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