Robust output feedback control for nonlinear systems including actuators

Authors:
Magdi S. Mahmoud;Mohamed Zribi
Affiliations:
College of Engineering, UAE University, P.O. Box 17555, Al-Ain, UAE and The Faculty of Engineering, Arab Academy for Sciences and Technology, P.O. Box 2033, El-Horeya-Heliopolis, Cairo, Egypt;Department of Electrical Engineering, Kuwait University, P.O. Box 5969, 13050 Safat, Kuwait
Venue:
Systems Analysis Modelling Simulation
Year:
2003

Citing 1
Cited 2

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Robust adaptive output feedback control for a class of nonlinear systems

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Stabilising nonlinear systems with time-varying delays by new parametrised method

International Journal of Systems, Control and Communications

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Abstract

A robust output feedback control is developed for the stabilization of a class of multivariable nonlinear systems including nonlinear actuators. The class of systems under consideration can be transformed into global normal form with no zero dynamics. The plant model is allowed to depend on constant unknown parameters which do not change the vector relative degree of the system. It is proven that if the actuator dynamics are sufficiently fast, the proposed controller will stabilize the origin of the actual system and will be robust with respect to the unknown parameters. It is also proven that the actuator dynamic need not be faster than the observer dynamics.