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Input and Output Performance of M-MRAC in the Presence of Bounded DisturbancesThis paper presents performance analysis of novel modified model reference adaptive control (M-MRAC) architecture in conjunction with different robust adaptive laws for the uncertain linear systems subject to unknown but bounded disturbances. It is shown that for any robust adaptive law the tracking error of the M-MRAC system can be arbitrarily decreased in transient and in the steady-state by increasing the adaptation rate, without generating high frequency oscillations in the control signal, which are unavoidable in conventional MRAC systems for large adaptation rates. Moreover, the generated adaptive control signal arbitrary closely tracks the ideal control signal when the error feedback gain is simultaneously increased with the adaptation rate, according to derived rule. The results are demonstrated via simulations.
Document ID
20110015524
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Stepanyan, Vahram (Mission Critical Technologies, Inc. Moffett Field, CA, United States)
Krishnakumar, Kalmanje Srinvas (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 25, 2013
Publication Date
August 2, 2011
Subject Category
Mathematical And Computer Sciences (General)
Report/Patent Number
ARC-E-DAA-TN1961
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference
Location: TOronto, Ontario
Country: Canada
Start Date: August 2, 2010
End Date: August 5, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNA08CG83C
Distribution Limits
Public
Copyright
Public Use Permitted.

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