Sampled-data output voltage regulation for a DC-DC buck converter nonlinear system with actuator and sensor failures

Abstract

This paper considers the regulation problem for a DC-DC buck converter nonlinear system with uncertain components and actuator and sensor failures. We establish a novel reduced-order observer to estimate the unmeasured state. Then, a new fault-tolerant sampled-data controller with an allowable sampling period is constructed to guarantee that the output voltage of the DC-DC buck converter nonlinear system can tend to the desired voltage. Finally, simulation results are presented to demonstrate the effectiveness of the proposed method.