A subdivision method for improving resolution of analog encoders

Chao Yi Wu, Chin Wei Chang, Ming Tzu Ho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The objective of this paper is to improve the resolution of incremental analog encoders. In practice, the outputs of analog encoders are not the quadrature sinusoidal waves, in which there always are mean offsets, phase offsets, and amplitude distortion. In this paper, to calibrate these encoders, the calibration coefficients are introduced. These coefficients are obtained by the least-squares method to attenuate offsets and distortion of encoder outputs. MATLAB/Simulink are used to simulate the algorithm of signal calibration and a subdivision algorithm is given to improve the resolution of analog encoders. In the experiments, the algorithms are implemented and tested on the digital signal processor in a motor driver. Finally, through a servo motor driver, the motor can be controlled and performs well by using an analog encoder with feedback from subdivided signals.

Original languageEnglish
Title of host publication2017 International Automatic Control Conference, CACS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538639009
DOIs
Publication statusPublished - 2018 Feb 7
Event2017 International Automatic Control Conference, CACS 2017 - Pingtung, Taiwan
Duration: 2017 Nov 122017 Nov 15

Publication series

Name2017 International Automatic Control Conference, CACS 2017
Volume2017-November

Other

Other2017 International Automatic Control Conference, CACS 2017
CountryTaiwan
CityPingtung
Period17-11-1217-11-15

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Control and Optimization

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  • Cite this

    Wu, C. Y., Chang, C. W., & Ho, M. T. (2018). A subdivision method for improving resolution of analog encoders. In 2017 International Automatic Control Conference, CACS 2017 (pp. 1-6). (2017 International Automatic Control Conference, CACS 2017; Vol. 2017-November). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CACS.2017.8284255