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High-performance quantitative robust switching control for optical telescopesFormat | Member Price | Non-Member Price |
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Paper Abstract
This paper introduces an innovative robust and nonlinear control design methodology for high-performance servosystems
in optical telescopes. The dynamics of optical telescopes typically vary according to azimuth and altitude
angles, temperature, friction, speed and acceleration, leading to nonlinearities and plant parameter uncertainty. The
methodology proposed in this paper combines robust Quantitative Feedback Theory (QFT) techniques with nonlinear
switching strategies that achieve simultaneously the best characteristics of a set of very active (fast) robust QFT
controllers and very stable (slow) robust QFT controllers. A general dynamic model and a variety of specifications from
several different commercially available amateur Newtonian telescopes are used for the controller design as well as the
simulation and validation. It is also proven that the nonlinear/switching controller is stable for any switching strategy and
switching velocity, according to described frequency conditions based on common quadratic Lyapunov functions
(CQLF) and the circle criterion.
Paper Details
Date Published: 18 July 2014
PDF: 14 pages
Proc. SPIE 9152, Software and Cyberinfrastructure for Astronomy III, 91521F (18 July 2014); doi: 10.1117/12.2056910
Published in SPIE Proceedings Vol. 9152:
Software and Cyberinfrastructure for Astronomy III
Gianluca Chiozzi; Nicole M. Radziwill, Editor(s)
PDF: 14 pages
Proc. SPIE 9152, Software and Cyberinfrastructure for Astronomy III, 91521F (18 July 2014); doi: 10.1117/12.2056910
Show Author Affiliations
William P. Lounsbury, Case Western Reserve Univ. (United States)
Mario Garcia-Sanz, Case Western Reserve Univ. (United States)
Published in SPIE Proceedings Vol. 9152:
Software and Cyberinfrastructure for Astronomy III
Gianluca Chiozzi; Nicole M. Radziwill, Editor(s)
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