NDLI: Coordinated feedforward and feedback control for fast repositioning of uncertain flexible systems

Content Provider	IEEE Xplore Digital Library
Author	Sungyung Lim Kam Chan
Copyright Year	2003
Description	Author affiliation: Dynamics & Controls Sect., Space Syst., Palo Alto, CA, USA (Sungyung Lim; Kam Chan)
Abstract	This paper presents a heterogeneous control approach that can facilitate fast repositioning of uncertain flexible systems with limited actuator capacity. By properly distributing the available actuator capacity, the proposed approach can coordinate a feedforward controller and a feedback controller within a robust model-following framework. The controllers are, respectively, derived from (M. Branch and A. Grace, 1996) a linear programming formula of time- and energy-optimal control and (P. Gahinet, et. al., 1995) a sub-optimal H/sup 2///spl mu/ dynamic synthesis. In particular, the second uniquely leads to a hybrid set of linear matrix inequalities, an algebraic Sylvester equation, and a matrix equation. Since the proposed approach can take advantage of aspects of both feedforward and feedback control, it is shown to facilitate as fast repositioning as the time-optimal control but with much less control energy usage.
Sponsorship	American Automatic Control Council IFAC
Starting Page	4799
Ending Page	4804
File Size	376288
Page Count	6
File Format	PDF
ISBN	0780378962
ISSN	07431619
DOI	10.1109/ACC.2003.1242482
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Feedback control Control systems Actuators Adaptive control Vehicle dynamics Linear matrix inequalities Equations Robust control Linear programming Optical control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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