Receding-horizon adaptive control of laser beam jitter

N. Tsuchiya, S Gibson, TC Tsao, Michel Verhaegen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

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 languageEnglish
Pages (from-to)227-237
JournalIEEE - ASME Transactions on Mechatronics
Volume21
Issue number1
DOIs
Publication statusPublished - 2016

Keywords

  • Adaptive control
  • Laser beams
  • Mirrors
  • Frequency control
  • Adaptation models
  • Transfer functions
  • Adaptive optics

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