This work precisely deals with the phenomena of state tracking, attenuation of external disturbance and compensation of input delay for switched stochastic dynamical systems via improved-equivalent-input-disturbance (IEID) estimator and Smith predictor based modified repetitive control design. By hosting the stochastic state observer and combining it with the IEID estimator and modified repetitive control design, a new closed-loop form of control system is formulated. To be specific, for the resultant closed-loop augmented configuration, a novel criterion which ensures the exponential stability of the considered system is derived in the form of linear-matrix-inequalities in accordance with the Lyapunov theory. Simultaneously, an IEID estimator and Smith predictor based modified repetitive control is designed in such a way that the states of the considered system track the specific reference input signals perfectly. Finally, as an example F-18 aircraft model is provided for describing the competence of the designed controller strategy and to explain the dominance of the obtained proposed controller over the existing results.

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Tracking and disturbance attenuation control for stochastic switched systems with input delay

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