NDLI: Dual-level gain-scheduled control for unmodeled subsystem dynamics

Content Provider	IEEE Xplore Digital Library
Author	Fedigan, S.J. Knospe, C.R.
Copyright Year	1999
Description	Author affiliation: DSP Solutions R&D Center, Texas Instrum. Inc., Dallas, TX, USA (Fedigan, S.J.)
Abstract	This paper extends the concept of gain-scheduling on a priori unmodeled dynamics by introducing parameter-dependent weighting filters. Using these filters, a dual-level gain-scheduled controller can be designed, where the controller depends on the weighting filter parameters and perturbation dynamics. Parameterizing the weighting filter provides a more structured description of the unmodeled dynamics, and reduces design conservatism by providing variable weighting envelope which can be tailored to the unmodeled dynamics in the actual plant. The synthesis problem is formulated as a continuously-constrained LMI optimization problem, which combines the existing LPV and LFT gain-scheduling methods. A design example is presented, and the dual-level gain-scheduled controller delivers performance which is superior to a dynamic gain-scheduled controller with a fixed weighting filter and which approaches the performance of the worst case "point"" design.
Starting Page	4009
Ending Page	4013
File Size	398434
Page Count	5
File Format	PDF
ISBN	0780349903
ISSN	07431619
DOI	10.1109/ACC.1999.786280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-06-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Aerodynamics Filters Automatic control Control systems Magnetic levitation Magnetic separation Mechanical variables control Control system synthesis Machinery Robust control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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