Encoder system design: strategies for error compensation

Dario Mancini; Annalina Auricchio; Massimo Brescia; Enrico Cascone; Fausto Cortecchia; Pietro Schipani; Gianfranco Spirito

doi:10.1117/12.308835

26 May 1998 Encoder system design: strategies for error compensation

Dario Mancini, Annalina Auricchio, Massimo Brescia, Enrico Cascone, Fausto Cortecchia, Pietro Schipani, Gianfranco Spirito

Author Affiliations +

Proceedings Volume 3351, Telescope Control Systems III; (1998) https://doi.org/10.1117/12.308835
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The encoder is the most used angular transducer in position control applications, such as the main axes position control of a telescope. In astronomical applications a very high precision in axes control is required. So a good encoder system design is essential to satisfy the requirements settled by the scientific goals. Today very good encode system are provided by several suppliers, with multiple readouts and error compensation capabilities into increase the reading precision and lessen the errors. Nevertheless during the lifetime of the system some unexpected errors can arise. In this paper some techniques to recognize, analyze and lessen the unavoidable encoder system error are described, with reference to some case studied.

Citation Download Citation

Dario Mancini, Annalina Auricchio, Massimo Brescia, Enrico Cascone, Fausto Cortecchia, Pietro Schipani, and Gianfranco Spirito "Encoder system design: strategies for error compensation", Proc. SPIE 3351, Telescope Control Systems III, (26 May 1998); https://doi.org/10.1117/12.308835

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