The GTC main axes servos and control system

M. Suárez; J. Rosich; J. Ortega; A. Pazos

doi:10.1117/12.789317

14 July 2008 The GTC main axes servos and control system

M. Suárez, J. Rosich, J. Ortega, A. Pazos

Proceedings Volume 7019, Advanced Software and Control for Astronomy II; 70190J (2008) https://doi.org/10.1117/12.789317
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The GTC azimuth and elevation axes control systems employ large custom direct-drive motors operated by means of embedded fully-digital current loops. A high-performance position loop has been developed based on sinusoidal encoder feedback with interpolation error compensation. Real-time servo feedback and trajectory tracking is implemented by object-oriented software components at CPU-level which trigger encoder sampling, interpolate the remote CORBA demands and perform high-frequency setpoint streaming for the servo controller.

Citation Download Citation

M. Suárez, J. Rosich, J. Ortega, and A. Pazos "The GTC main axes servos and control system", Proc. SPIE 7019, Advanced Software and Control for Astronomy II, 70190J (14 July 2008); https://doi.org/10.1117/12.789317

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