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Rejection of unknown periodic disturbances for continuous‐time MIMO systems with dynamic uncertainties
Author(s) -
Jafari Saeid,
Ioannou Petros A.
Publication year - 2016
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.2683
Subject(s) - control theory (sociology) , mimo , parametric statistics , computer science , controller (irrigation) , stability (learning theory) , aerospace , noise (video) , control engineering , broadband , channel (broadcasting) , engineering , control (management) , telecommunications , mathematics , artificial intelligence , statistics , machine learning , agronomy , image (mathematics) , biology , aerospace engineering
Summary Rejection of unknown periodic disturbances in multi‐channel systems has several industrial applications that include aerospace, consumer electronics, and many other industries. This paper presents a design and analysis of an output‐feedback robust adaptive controller for multi‐input multi‐output continuous‐time systems in the presence of modeling errors and broadband output noise. The trade‐off between robust stability and performance improvement as well as practical design considerations for performance improvements are presented. It is demonstrated that proper shaping of the open‐loop plant singular values as well as over‐parameterizing the controller parametric model can significantly improve performance. Numerical simulations are performed to demonstrate the effectiveness of the proposed scheme. Copyright © 2016 John Wiley & Sons, Ltd.