Decentralized Adaptive Robust Tracking and Model Following for Large-Scale Systems Including Delayed State Perturbations in the Interconnections

H. S. Wu ()
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H. S. Wu: Prefectural University of Hiroshima

Journal of Optimization Theory and Applications, 2008, vol. 137, issue 1, No 17, 253 pages

Abstract: Abstract The problem of decentralized robust tracking and model following is considered for a class of uncertain large-scale systems including delayed state perturbations in the interconnections. In this paper, it is assumed that the upper bounds of the delayed state perturbations, uncertainties, and external disturbances are unknown. A modified adaptation law with σ-modification is introduced to estimate such unknown bounds, and on the basis of the updated values of these unknown bounds, a class of decentralized local memoryless state feedback controllers is constructed for robust tracking of dynamical signals. The proposed decentralized adaptive robust tracking controllers can guarantee that the tracking errors between each time-delay subsystem and the corresponding local reference model without time-delay decrease uniformly asymptotically to zero. Finally, a numerical example is given to demonstrate the validity of the results.

Keywords: Large-scale systems; Time delay; Decentralized control; Adaptive control; Robust tracking control; Model following; Reference model (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1007/s10957-007-9325-7

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