fringe signals based on non-uniform sampling Analysis and processing of Morie

	fringe signals based on non-uniform sampling Analysis and processing of Morie
	Zuo, Y.; K.-H. Long; J.-G. Liu; B. Liu; L. Zhou and K. Qiao
	2015
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	23 期号:4 页码:1146-1152
摘要	To measure the dynamic real-time interpolation error of an optical encoder in non-uniform rotation, a method for analysis and processing the Morie fringe signals based on non-uniform sampling was presented. The real Morie fringe signal equation was constructed by Fourier series principle. According to real-time sampling on the encoder at different speeds, the characteristics of non-uniform sampling for Moire signals was revealed. On the basis of the non-uniformity of the signal sampling, the Morie fringe signals were reconstructed by using the least square curve fitting. Reconstructed signals were analysed by Discrete Fourier Transform algorithm and the waveform parameters were obtained. With the relationship between interpolation error and signal parameters, the measurement of encoder dynamic error was achieved. The Moire fringe signal of a 21 bit absolute optical encoder was analysed and processed and the twice extreme dynamic interpolation errors are +3.21; -4.69 and +3.45; -4.81, respectively. Experiment result shows that this method effectively processes Morie fringe signal of variable frequency in the encoder with non-uniform rotation, and accurately measures the dynamic interpolation error of the encoder, which provides foundation for real-time detection and correction of encoder error at the actual work site. , 2015, Chinese Academy of Sciences. 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/181722/56155
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zuo, Y.,K.-H. Long,J.-G. Liu,et al. fringe signals based on non-uniform sampling Analysis and processing of Morie[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2015,23(4):1146-1152.
APA	Zuo, Y.,K.-H. Long,J.-G. Liu,B. Liu,&L. Zhou and K. Qiao.(2015).fringe signals based on non-uniform sampling Analysis and processing of Morie.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,23(4),1146-1152.
MLA	Zuo, Y.,et al."fringe signals based on non-uniform sampling Analysis and processing of Morie".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 23.4(2015):1146-1152.

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