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This paper proposes data-driven feedback-feedforward controller design from closed-loop step response data. The proposed method directly tunes feedback controllers based on Virtual Reference Feedback Tuning (VRFT) using closed-loop step response data. Then, the feedforward controller is designed for disturbance attenuation from measurable disturbances. The feedback controller is linearly parametrized...
This paper is devoted to the stabilization problem for a class of stochastic feedforward nonlinear systems with unknown growth rate by time-varying state feedback. As the first contribution, a general LaSalle-type theorem is established for stochastic time-varying systems with the aid of the generalized weakly positive definite function. Then a time-varying state feedback control scheme is established...
We consider the problem of measurement feedback controller design for a class of feedforward nonlinear systems with zero-dynamics and uncertain control coefficient. The sensor noise can be any bounded signal whose bound is finite. For design convenience, a state transformation is first introduced and the new system is obtained. Then, a measurement feedback controller is proposed with a suitable gain...
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