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Geometric properties of gradient projection anti-windup compensated systems

Author(s)
Teo, Justin; How, Jonathan P.
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Abstract
The gradient projection anti-windup (GPAW) scheme was recently proposed as an anti-windup method for nonlinear multi-input-multi-output systems/controllers, which was recognized as a largely open problem in a recent survey paper. Here, we show that for controllers whose output equation depends only on its state, the GPAW compensated controller achieves exact state-output consistency when appropriately initialized. In a related paper analyzing the GPAW scheme on a simple constrained system, this property was crucial in proving that the GPAW scheme can only maintain/enlarge the exact region of attraction of the uncompensated system. When the nominal controller does not have the required structure, an arbitrarily close approximating controller can be constructed. Further geometric properties of GPAW compensated systems are then presented, which illuminates the role of the GPAW tuning parameter.
Date issued
2010-07
URI
http://hdl.handle.net/1721.1/58898
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Journal
Proceedings of the American Control Conference, 2010
Publisher
Institute of Electrical and Electronics Engineers
Citation
Teo, Justin and Jonathan P. How. "Geometric Properties of Gradient Projection Anti-windup Compensated Systems." American Control Conference, Marriott Waterfront, Baltimore, MD, USA June 30-July 02, 2010.© 2010 IEEE.
Version: Final published version
Other identifiers
INSPEC Accession Number: 11508896
ISBN
978-1-4244-7426-4
ISSN
0743-1619

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