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Adaptive Control Using Residual Mode Filters Applied to Wind TurbinesMany dynamic systems containing a large number of modes can benefit from adaptive control techniques, which are well suited to applications that have unknown parameters and poorly known operating conditions. In this paper, we focus on a model reference direct adaptive control approach that has been extended to handle adaptive rejection of persistent disturbances. We extend this adaptive control theory to accommodate problematic modal subsystems of a plant that inhibit the adaptive controller by causing the open-loop plant to be non-minimum phase. We will augment the adaptive controller using a Residual Mode Filter (RMF) to compensate for problematic modal subsystems, thereby allowing the system to satisfy the requirements for the adaptive controller to have guaranteed convergence and bounded gains. We apply these theoretical results to design an adaptive collective pitch controller for a high-fidelity simulation of a utility-scale, variable-speed wind turbine that has minimum phase zeros.
Document ID
20110016039
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Frost, Susan A. (NASA Ames Research Center Moffett Field, CA, United States)
Balas, Mark J. (Wyoming Univ. Laramie, WY, United States)
Date Acquired
August 25, 2013
Publication Date
March 28, 2011
Subject Category
Mathematical And Computer Sciences (General)
Report/Patent Number
ARC-E-DAA-TN2978
Meeting Information
Meeting: Infotech@Aerospace 2011
Location: St. Louis, MO
Country: United States
Start Date: March 28, 2011
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 877868.02.07.01.02.01.05
Distribution Limits
Public
Copyright
Public Use Permitted.

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