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.
Original language | English |
---|---|
Pages (from-to) | 227-237 |
Journal | IEEE - ASME Transactions on Mechatronics |
Volume | 21 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- Adaptive control
- Laser beams
- Mirrors
- Frequency control
- Adaptation models
- Transfer functions
- Adaptive optics