1 October 2006 Variable-order adaptive control of a microelectromechanical steering mirror for suppression of laser beam jitter
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Optical Engineering, 45(10), 104206 (2006). doi:10.1117/1.2363189
Abstract
We present an adaptive control scheme for laser-beam steering by a two-axis microelectromechanical systems (MEMS) fast steering mirror. Disturbances in the laser beam are rejected by a µ-synthesis feedback controller augmented by the adaptive control loop, which determines control gains that are optimal for the current disturbance acting on the laser beam. The variable-order adaptive controller is based on an adaptive lattice filter that implicitly identifies the disturbance statistics from real-time sensor data. Experimental results demonstrate that the adaptive controller significantly extends the disturbance-rejection bandwidth achieved by the feedback controller alone. The experimental results also illustrate the value of the variable-order capability of the adaptive controller.
Nestor O. Perez Arancibia, Neil Chen, James Steven Gibson, Tsu-Chin Tsao, "Variable-order adaptive control of a microelectromechanical steering mirror for suppression of laser beam jitter," Optical Engineering 45(10), 104206 (1 October 2006). http://dx.doi.org/10.1117/1.2363189
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KEYWORDS
Adaptive control

Digital filtering

Mirrors

Optical filters

Feedback control

Sensors

Feedback loops

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