Laser beam jitter control using recursive-least-squares adaptive filters

Authors
Yoon, Hyungjoo
Bateman, Brett E.
Agrawal, Brij M.
Subjects
Advisors
Date of Issue
2011
Date
Publisher
ASME
Language
Abstract
The primary focus of this research is to develop and implement control schemes for combined broadband and narrowband disturbances to optical beams. The laser beam jitter control testbed developed at the Naval Postgraduate School is used for development of advanced jitter control techniques. First, we propose a least quadratic Gaussian feed- back controller with integrator for cases when only the error signal (the difference between the desired and the actual beam positions) is available. An anti-notch filter is also utilized to attenuate a vibrational disturbance with a known frequency. Next, we develop feedforward adaptive filter methods for cases when a reference signal, which is highly correlated with the jitter disturbance, is available. A filtered-X recursive least-squares algorithm with an integrated bias estimator is proposed to deal with a constant bias disturbance. Finally, experimental results are provided to validate and compare the performance of the developed control techniques. The designed adaptive filter has a simple structure but shows good jitter rejection performance, thanks to the use of a reference signal. [DOI: 10.]
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1115/1.40033372
URI
https://hdl.handle.net/10945/55407
Series/Report No
Department
Physics
Mechanical and Astronautical Engineering (MAE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
8 p.
Citation
H. Yoon, B.E. Bateman, B.N. Agrawal, "Laser beam jitter control using recursive-least-squares adaptive filters," Journal of Dynamic Systems, Measurement and Control, v. 133, (July 2011), 041001/1-8.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Collections
Publications
Load more