Anti-Disturbance and Fault Tolerance Control for Discrete Systems Based on Interval Observers

In this paper, a fault-tolerant control method is proposed for linear discrete systems with unknown disturbances and actuator faults. First, an interval observer is designed to generate interval estimates of the state. Then, a reconstruction method for the integrated uncertainty is established through the interval estimation. Further, the reconstructed integrated uncertainty is introduced, and a controller with uncertainty compensation is constructed using a parametric method. Finally, simulation results demonstrate the effectiveness of the proposed method.