Optics derotator servo control system for SONG Telescope

Jin Xu; Changzhi Ren; Yu Ye

doi:10.1117/12.924943

17 September 2012 Optics derotator servo control system for SONG Telescope

Jin Xu, Changzhi Ren, Yu Ye

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 84444T (2012) https://doi.org/10.1117/12.924943
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Stellar Oscillations Network Group (SONG) is an initiative which aims at designing and building a groundbased network of 1m telescopes dedicated to the study of phenomena occurring in the time domain. Chinese standard node of SONG is an Alt-Az Telescope of F/37 with 1m diameter. Optics derotator control system of SONG telescope adopts the development model of "Industrial Computer + UMAC Motion Controller + Servo Motor".¹ Industrial computer is the core processing part of the motion control, motion control card(UMAC) is in charge of the details on the motion control, Servo amplifier accepts the control commands from UMAC, and drives the servo motor. The position feedback information comes from the encoder, to form a closed loop control system. This paper describes in detail hardware design and software design for the optics derotator servo control system. In terms of hardware design, the principle, structure, and control algorithm of servo system based on optics derotator are analyzed and explored. In terms of software design, the paper proposes the architecture of the system software based on Object-Oriented Programming.

Citation Download Citation

Jin Xu, Changzhi Ren, and Yu Ye "Optics derotator servo control system for SONG Telescope", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84444T (17 September 2012); https://doi.org/10.1117/12.924943

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