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An optimized nonlinear robust strategy is proposed for coordinated excitation and governor of hydroturbine generator sets. Developed using the non-elastic water hammer model, the new controller is applied to the elastic one successfully. An integral estimator is used to observe and compensate for the entire unknown dynamics. The controller parameters are optimized via genetic algorithms. Simulation...
In this paper, we investigate the feasibility of an approximate feedback linearization (AFL) approach combined with probabilistic robustness analysis and design (PRAD) for a kind of constrained nonlinear systems with parameter uncertainties. The AFL approach uses an integral observer to observe and compensate the nonlinear dynamics, uncertainties, external disturbances and saturation constraints of...
Base on a kind of model estimator, this paper presents an adaptive feedback linearization control for the large-angle rotational maneuver and vibration suppression of a flexible spacecraft. The model estimator provides the approximate model information through the measure of system input variable, output variable (pitch angle) and its time derivative. The integral actions included can not only compensate...
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