A method of analysis based on Morie fringe signals of optical encoder with non-uniform sampling

	A method of analysis based on Morie fringe signals of optical encoder with non-uniform sampling
	Zuo, Y.; K.-H. Long; B. Liu; J.-G. Liu; L. Zhou and K. Qiao
	2015
发表期刊	Tien Tzu Hsueh Pao/Acta Electronica Sinica
卷号	43 期号:10 页码:1936-1940
摘要	In order to realize the detection for dynamic interpolation error in high-precision optical encoder with non-uniform rotation, a method of analysis based on morie fringe photoelectric signals with non-uniform sampling is presented. First, the real signal waveform is reconstructed with collecting non-uniform signal data of encoder in the method of least squares curve fitting. Then, according to the discrete Fourier transform algorithm analyzing reconstructed signal, meanwhile deducing the calculation expression of frequency, amplitude and phase. The feasibility of the algorithm is assessed with software emulation. Finally, the precise code signal of a 21-bit absolute rotary optical encoder is analyzed. Dynamic interpolation error is obtained based on relationship between the signal parameters and interpolation error. Interpolation extreme errors are +2.41 and -3.08. Experiment result shows that, the signal parameters are obtained with using signal reconstruction and Fourier transform algorithm, that reflects the real morie signal quality. This method can effectively measure the dynamic interpolation error while the encoder is non-uniform rotation, which establishes foundation of real-time detection of encoder error at the actual work site. 2015, Chinese Institute of Electronics. 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/181722/56347
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,B. Liu,et al. A method of analysis based on Morie fringe signals of optical encoder with non-uniform sampling[J]. Tien Tzu Hsueh Pao/Acta Electronica Sinica,2015,43(10):1936-1940.
APA	Zuo, Y.,K.-H. Long,B. Liu,J.-G. Liu,&L. Zhou and K. Qiao.(2015).A method of analysis based on Morie fringe signals of optical encoder with non-uniform sampling.Tien Tzu Hsueh Pao/Acta Electronica Sinica,43(10),1936-1940.
MLA	Zuo, Y.,et al."A method of analysis based on Morie fringe signals of optical encoder with non-uniform sampling".Tien Tzu Hsueh Pao/Acta Electronica Sinica 43.10(2015):1936-1940.

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