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Output Feedback Sliding Mode Controller Design Via H∞ THEORY
Author(s) -
Chang JeangLin
Publication year - 2003
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 - 10.1111/j.1934-6093.2003.tb00094.x
Subject(s) - control theory (sociology) , sliding mode control , controller (irrigation) , mode (computer interface) , stability theory , output feedback , estimator , state (computer science) , robust control , state estimator , variable structure control , scheme (mathematics) , control engineering , engineering , control (management) , mathematics , computer science , control system , nonlinear system , physics , algorithm , mathematical analysis , statistics , electrical engineering , quantum mechanics , artificial intelligence , agronomy , biology , operating system
For a linear system with mismatched disturbances, a sliding mode controller using only output feedback is developed in this paper. Through application of the H∞ control theory, the designed switching surface can achieve robust stabilization and guarantee a level of disturbance rejection during sliding mode. Although the system exhibits disturbances, a state estimator is used which, using only measured outputs, can asymptotically estimate the system states. The control law is designed with respect to the estimated signals. Finally, a numerical example is presented to demonstrate the proposed control scheme.