Anti-disturbance bumpless transfer control of switched linear systems with unmeasurable states and multiple disturbances

This paper investigates the anti-disturbance bumpless transfer (ADBT) control problem of switched linear systems suffering from unmeasurable states and multiple disturbances. A switching estimator is designed to observe the system state and the unmeasurable disturbance. Then, an ADBT controller that can generate continuous control input is constructed on the grounds of the gain interpolation technique. In contrast to the existing bumpless transfer (BT) control schemes, the proposed one does not depend on the lower bound of the dwell time of sub-modes and allows that the switching signal is not pre-given. A sufficient condition is derived to ensure the solvability of the ADBT control problem. The switched RLC circuit model is employed to show the effectiveness of the proposed ADBT control scheme.