1 April 2004 Adaptive feedback control of optical jitter using Q-parameterization
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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.
Mark A. McEver, Daniel G. Cole, 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
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