Adaptive feedback control of optical jitter using Q-parameterization

Mark A. McEver; Daniel G. Cole; Robert L. Clark

doi:10.1117/1.1666596

1 April 2004 Adaptive feedback control of optical jitter using Q-parameterization

Mark A. McEver, Daniel G. Cole, Robert L. Clark

Author Affiliations +

Optical Engineering, Vol. 43, Issue 4, (April 2004). https://doi.org/10.1117/1.1666596

Abstract

Vibration-induced jitter degrades the pointing and imaging performance of precision optical systems. Practical active jitter reduction is achieved by maintaining beam alignment with mirror-positioning control systems. In the presence of time-varying or uncertain disturbances, jitter control systems using fixed-gain feedback control loops cannot operate without significant limitations on their performance. A feedback control technique called Q-parameterization can adapt to time-varying disturbances by adjusting its parameters in real time to maintain optimal performance. Adaptive feedback jitter control using Q-parameterization is experimentally verified on an optical testbed, increasing jitter reduction compared to an H₂-optimal fixed-gain controller.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Mark A. McEver, Daniel G. Cole, and Robert L. Clark "Adaptive feedback control of optical jitter using Q-parameterization," Optical Engineering 43(4), (1 April 2004). https://doi.org/10.1117/1.1666596

Published: 1 April 2004

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