Observer-based control of systems with slope-restricted nonlinearities

An observer design is presented which makes use of bounds on the slope of system nonlinearities. Necessary and sufficient conditions are derived for the feasibility of the design. A class of state feedback control laws are characterized which, when implemented with the observer states, ensure global...

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Veröffentlicht in:	IEEE transactions on automatic control 2001-07, Vol.46 (7), p.1146-1150
Hauptverfasser:	Arcak, M., Kokotovic, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Asymptotic properties Automatic control Control nonlinearities Control systems Design engineering Feasibility Feedback control Linear feedback control systems Linear systems Magnetic bearings Nonlinear control systems Nonlinearity Observers Piecewise linear techniques State feedback Vectors
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Beschreibung
Zusammenfassung:	An observer design is presented which makes use of bounds on the slope of system nonlinearities. Necessary and sufficient conditions are derived for the feasibility of the design. A class of state feedback control laws are characterized which, when implemented with the observer states, ensure global asymptotic stability. One such certainty-equivalence design is illustrated on an active magnetic bearing example.
ISSN:	0018-9286 1558-2523
DOI:	10.1109/9.935073