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Almost disturbance decoupling for a class of nonlinear systems via sampled‐data output feedback control
Author(s) -
Chu Hongyan,
Qian Chunjiang,
Yang Jiquan,
Xu Shengyuan,
Liu Yijian
Publication year - 2015
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.3403
Subject(s) - decoupling (probability) , control theory (sociology) , nonlinear system , output feedback , controller (irrigation) , computer science , control (management) , feedback control , disturbance (geology) , mathematics , control engineering , engineering , artificial intelligence , paleontology , physics , quantum mechanics , biology , agronomy
Summary This paper addresses the problem of almost disturbance decoupling (ADD) using sampled‐data output feedback control for a class of continuous‐time nonlinear systems. Under a lower‐triangular linear growth condition, a sampled‐data output feedback controller is constructed based on the output feedback domination approach, and a Gronwall–Bellman‐like inequality is established in the presence of disturbances. Even though a sampled‐data controller is employed for easy computer implementation, the proposed controller is still able to achieve ADD under the commonly used continuous‐time requirement, that is, the disturbances' effect on the output is attenuated to an arbitrary degree of accuracy in the L 2 gain sense. Copyright © 2015 John Wiley & Sons, Ltd.