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Subspace based direct adaptive ℋ︁ ∞ control
Author(s) -
Woodley Bruce R.,
How Jonathan P.,
Kosut Robert L.
Publication year - 2001
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.688
Subject(s) - subspace topology , computer science , control (management) , feature (linguistics) , random subspace method , adaptive control , control theory (sociology) , closed loop , algorithm , data mining , artificial intelligence , control engineering , engineering , philosophy , linguistics
Abstract This paper presents extensions of the model free subspace based ℋ ∞ control approach. In particular, a fast algorithm for computing a subspace predictor from experimental data is introduced. The paper also describes a fast algorithm for updating the subspace predictor when new experimental data are available. These algorithms can be applied in conjunction with model free subspace based ℋ ∞ control in order to create a novel adaptive control law. A defining feature of this control law is that an estimate of achievable performance is maintained throughout the operation of the closed‐loop system. These algorithms are used to demonstrate the closed‐loop control of a flexible structure. Copyright © 2001 John Wiley & Sons, Ltd.