Infrared and Laser Engineering, Volume. 46, Issue 5, 517005(2017)
Accurate real-time velocity measurement of photoelectric encoder based on wavelet transform
As a velocity feedback device, photoelectrical encoder was widely used in industry, aerospace, military and other fields. The precision and response influenced the whole system performance immediately. This paper studied velocity information arithmetic by using wavelet which reduced interference and noises. This arithmetic had been applied in a space encoder, improved the dynamic response of control system, accuracy in steady-state. This arithmetic was simple, less resource, short time consuming and universal, can be extended to other encoder. Meanwhile, this paper designed velocity detection system, to achieve the detection of precision. The experiments shown that: the velocity error was reduced from 6.956 (")/ms to 0.370 7 (")/ms, by using this arithmetic.
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Du Yingcai, Song Lu, Wan Qiuhua, Yang Shouwang. Accurate real-time velocity measurement of photoelectric encoder based on wavelet transform[J]. Infrared and Laser Engineering, 2017, 46(5): 517005
Category: 光电测量
Received: Sep. 5, 2016
Accepted: Oct. 3, 2016
Published Online: Jul. 10, 2017
The Author Email: Yingcai Du (ycdu@163.com)