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Dynamic Output Feedback Disturbance Rejection Controller Design
Author(s) -
Chang JeangLin
Publication year - 2013
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.544
Subject(s) - control theory (sociology) , disturbance (geology) , bounded function , mimo , controller (irrigation) , state observer , observer (physics) , mode (computer interface) , computer science , state (computer science) , mathematics , control (management) , algorithm , nonlinear system , artificial intelligence , paleontology , mathematical analysis , channel (broadcasting) , computer network , physics , quantum mechanics , agronomy , biology , operating system
This paper considers the problem of simultaneously estimating the state and the unknown disturbance of a multiple input multiple output ( MIMO ) disturbed system, and designs the disturbance rejection controller according to the estimated information. Through use of a sliding mode observer to obtain the relation between the unknown disturbance and the system state, the original system is transformed into descriptor system form and the proportional derivative observer proposed to simultaneously estimate the state and the unknown disturbance. The estimation error is shown to be finally bounded in a small region. The controller algorithm developed in this paper can effectively avoid the peaking phenomenon. Finally, the feasibility and the performance of the proposed method are analyzed and demonstrated with a simulated example.