Coding of Shared Track Gray Encoder
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Published:1999-01-04
Issue:3
Volume:122
Page:573-576
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ISSN:0022-0434
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Container-title:Journal of Dynamic Systems, Measurement, and Control
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language:en
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Short-container-title:
Affiliation:
1. Dept. of Mechanical & Aeronautical Eng., University of California, Davis, CA 95616 2. School of Mechanical Eng., Northeastern University, Shenyang, China
Abstract
A conventional absolute encoder consists of multiple tracks and therefore has a large size. Based on the theory of shared control, a new kind of absolute encoder called the shared track Gray encoder is proposed. This encoder has only one track, and the code has the characteristics of Gray code. In this paper, first the working principle of the encoder is introduced and the existence condition of the codes for the shared track Gray encoder is derived. Then the search procedure for the codes using self-developed assembler programs is given. Finally, the pattern of the encoder is presented. Since the shared track Gray encoder has only one track and the code is progressive, it is much smaller in size and higher in accuracy than a conventional one. [S0022-0434(00)01503-3]
Publisher
ASME International
Subject
Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering
Reference9 articles.
1. Thyer, G. E., 1991, Computer Numerical Control of Machine Tools, Butler & Tanner Ltd., Oxford, pp. 118–121. 2. Oono, K., Matsumoto, T., and Imai, M., et al., 1991, “One-Track Absolute Encoder,” J. Jpn. Soc. Precis. Eng., 57, No. 8, pp. 1369–1374 (in Japanese). 3. Walcher, H., 1994, Position Sensing, Butterworth-Heinermann Ltd., New York, pp. 117–133. 4. Wang, Q. Y., and Yan, X. R., 1995, “Shared Control Method for Combination State Conversion of Electro-Mechanical Equipment,” Chin. J. Mech. Eng., 8, No. 4, pp. 304–308. 5. Visme, G. H., 1971, Binary Sequences, The English Universities Press, London.
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