Structure of a hybrid signal LQG controller for adaptive optics

Douglas P. Looze

doi:10.1117/12.789116

11 July 2008 Structure of a hybrid signal LQG controller for adaptive optics

Douglas P. Looze

Proceedings Volume 7015, Adaptive Optics Systems; 701536 (2008) https://doi.org/10.1117/12.789116
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The effects of a controller on the residual wavefront variance in an adaptive optics system can be represented by a discrete-time system. Consequently, the controller design is optimized by the solution of a discrete-time Linear- Quadratic-Gaussian (LQG) problem. This paper analyzes the structure of the LQG controller and the effects of varying loop delay and actuator lag on the controller. The loop delay is represented as a delay of actuator commands to emphasize the structure.

Citation Download Citation

Douglas P. Looze "Structure of a hybrid signal LQG controller for adaptive optics", Proc. SPIE 7015, Adaptive Optics Systems, 701536 (11 July 2008); https://doi.org/10.1117/12.789116

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