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Output feedback concurrent learning model reference adaptive control

Author(s)
Quindlen, John Francis; How, Jonathan P
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Abstract
Concurrent learning model reference adaptive control has recently been shown to guarantee simultaneous state tracking and parameter estimation error convergence to zero without requiring the restrictive persistency of excitation condition of other adaptive methods. This simultaneous convergence drastically improves the transient performance of the adaptive system since the true model is learned, but prior results were limited to systems with full state feedback. This paper presents an output feedback form of the concurrent learning controller for a novel extension to partial state feedback systems. The approach modifies a baseline LQG/LTR adaptive law with a recorded data stack of output and state estimate vectors. This maintains the guaranteed stability and boundedness of the baseline adaptive method, while improving output tracking error response. Simulations of exible aircraft dynamics demonstrate the improvement of the concurrent learning system over a baseline output feedback adaptive method.
Date issued
2015-01
URI
http://hdl.handle.net/1721.1/114289
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Journal
AIAA Guidance, Navigation, and Control Conference
Publisher
American Institute of Aeronautics and Astronautics (AIAA)
Citation
John F. Quindlen et al. "Output Feedback Concurrent Learning Model Reference Adaptive Control", AIAA Guidance, Navigation, and Control Conference, 2015 January 5-9, Kissimmee, Florida, USA, American Institute of Aeronautics and Astronautics, 2015 © 2015 American Institute of Aeronautics and Astronautics
Version: Author's final manuscript
ISBN
978-1-62410-339-1

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