Cascaded sliding-mode observer and its applications in output feedback control part II: Adaptive output feedback control

Part II proposes a cascaded sliding-mode observer based output feedback controller for control of multi-input multi-output (MIMO) system. The controller, designed based on feedback linearization control strategy, requires the information of the states and perturbations of the system for realization of disturbance rejection. The observer studied in part I [1] is then utilized to provide the accurate estimates of states and perturbations. As is proved, the proposed observer-based controller can ensure Lyapunov stability of the closed-loop system. Also, it can be used for output tracking control. Simulation studies are carried out on a single-wind-energy-conversion-system-infinite-bus (SWNCSIB) system to test the performances of the proposed observer-based output feedback controller.

Automated summary

A cascaded sliding-mode observer based output feedback controller for MIMO system is proposed in this paper, designed based on feedback linearization control strategy. The observer provides accurate estimates of states and perturbations, ensuring Lyapunov stability of the closed-loop system and output tracking control. Simulation studies on SWNCSIB system validate the performance of the proposed observer-based output feedback controller.