Robust Fault-Tolerant Control of Uncertain Networked Control Systems Subject to Random Delays and Data Packet Dropouts

This paper investigates the problem of network-based fault-tolerant controller design for networked control systems (NCSs) in the presence of random delays and data packet dropouts. A novel actuator fault model which is more general and practical than the conventional actuator fault models is developed. Considering this new fault model, the NCSs are firstly modeled as a Markovian jump system (MJS) with partly unknown transition probabilities (TPs), upon which sufficient conditions based on linear matrix inequalities (LMIs) are then developed to design the output feedback fault-tolerant controller to ensure the stochastic stability of the NCS. Finally, simulation results are provided to illustrate the effectiveness and superiority of the proposed method compared to the existing approaches in the literatures.