IEEE Transactions on Automatic Control · 2015 · 38 citations · 6 references
EngineeringSystems EngineeringDynamical SystemsProcess ControlSystem DynamicsAdaptive ControlControl Of Dynamical SystemsControl SystemsControl TheoryNonlinear ControlState EstimationAdaptive Control Of Nonlinear SystemsAdaptive Control Of Uncertain SystemsAdaptive Nonlinear ControlAdaptive ObserversNonlinear ObserversNonlinear SystemsObserver DesignObserver Design For Nonlinear Systems
The problem of observer design is addressed for output-injection nonlinear systems. A major difficulty with this class of systems is that the state equation involves an output-dependent term that is explicitly dependent on unknown parameters. As the output is only accessible to measurement at sampling times, the output-dependent term turns out to be (almost all time) subject to a double uncertainty, making previous adaptive observers inappropriate. Presently, a new hybrid adaptive observer is designed and shown to be exponentially convergent under ad-hoc conditions.
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