NDLI: Laser beam tracking by repetitive and variable-order adaptive control

Content Provider	IEEE Xplore Digital Library
Author	Chi-Ying Lin Yen-Cheng Chen Tsu-Chin Tsao Gibson, S.
Copyright Year	2008
Description	Author affiliation: Dept. of Mech. & Aerosp. Eng., Univ. of California, Los Angeles, Los Angeles, CA (Chi-Ying Lin; Yen-Cheng Chen; Tsu-Chin Tsao; Gibson, S.)
Abstract	This paper addresses laser beam tracking control problem for tracing dynamic trajectories subject to random disturbances. A variable-order adaptive control scheme based on a recursive least-squares lattice filter is applied for suppressing random jitter. For tracking a reference trajectory generated by a deterministic dynamic model, an internal model principle based feedback loop is introduced as an outer loop to the adaptive feedback loop to achieve asymptotic tracking performance. Particularly a repetitive control is applied to track periodic trajectories. A feature of the control system proposed in this paper is that the design of the adaptive and repetitive control are independent because each design is based only on the plant model. Experiment conducted on a two-axis fast steering mirror for tracking diamond-shaped beam path demonstrates the ability of the integrated control to achieve asymptotic tracking of periodic trajectories by the repetitive control while optimally rejecting random disturbances by the adaptive control.
Starting Page	2371
Ending Page	2376
File Size	527148
Page Count	6
File Format	PDF
ISBN	9781424420780
ISSN	07431619
DOI	10.1109/ACC.2008.4586846
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Laser beams Adaptive control Trajectory Tracking loops Feedback loop Laser feedback Laser modes Optical control Lattices Adaptive filters
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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