NDLI: Implementation of nonlinear control laws for an optical delay line

Content Provider	IEEE Xplore Digital Library
Author	Hench, J.J. Lurie, B. Grogan, R. Johnson, R.
Copyright Year	2000
Description	Author affiliation: Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA (Hench, J.J.)
Abstract	This paper discusses the implementation of a globally stable nonlinear controller algorithm for the Real-time Interferometer Control System Testbed (RICST) brassboard optical delay line (ODL) developed for the Interferometry Technology Program at the Jet Propulsion Laboratory. The control methodology essentially employs loop shaping to implement linear control laws, while utilizing nonlinear elements as means of ameliorating the effects of actuator saturation in its coarse, main, and vernier stages. The linear controllers were implemented as high-order digital filters and were designed using Bode integral techniques to determine the loop shape. The nonlinear techniques encompass the areas of exact linearization, anti-windup control, nonlinear rate limiting, and modal control. Details of the design procedure are given as well as data from the actual mechanism.
Starting Page	345
Ending Page	357
File Size	906122
Page Count	13
File Format	PDF
ISBN	0780358465
ISSN	1095323X
DOI	10.1109/AERO.2000.878446
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-03-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical control Nonlinear optics Delay lines Optical interferometry Shape control Optical filters Optical saturation Nonlinear control systems Control systems Real time systems
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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