Abstract:
This paper uses a new method for receding-horizon adaptive control to reduce laser beam jitter. The control scheme generates a control command derived from a receding-hor...Show MoreMetadata
Abstract:
This paper uses a new method for receding-horizon adaptive control to reduce laser beam jitter. The control scheme generates a control command derived from a receding-horizon performance index that involves predicted future values of an output disturbance. A recursive least-squares adaptive lattice filter performs the required prediction based on real-time measurements. In a laser beam steering experiment, the adaptive controller drives a micro mirror to cancel broadband disturbance and maintain the laser spot on an optical position sensor. Experimental results demonstrate the capability of the receding-horizon adaptive controller to incorporate frequency weighting to reduce sensitivity to plant modeling error at high frequencies.
Published in: IEEE/ASME Transactions on Mechatronics ( Volume: 21, Issue: 1, February 2016)