摘要：AbstractThe task of output feedback stabilization of a linear plant of arbitrary relative degree is solved under parametric uncertainty and matching periodic disturbances. Resulting controller was built coupling a high-gain output controller and an external disturbance observer by means of switching algorithm. Extending previously developed approach we suppose disturbance frequency to be not only unknown, but also time-varying, which is the case for a number of applications. Simulation results illustrate performance of the obtained controller for the cases of piece-wise constant and drifting frequency disturbances.
