Fault Detection of Networked Control Systems Based on Sliding Mode Observer

Abstract EN

This paper is concerned with the network-based fault detection problem for a class of nonlinear discrete-time networked control systems with multiple communication delays and bounded disturbances.

First, a sliding mode based nonlinear discrete observer is proposed.

Then the sufficient conditions of sliding motion asymptotical stability are derived by means of the linear matrix inequality (LMI) approach on a designed surface.

Then a discrete-time sliding-mode fault observer is designed that is capable of guaranteeing the discrete-time sliding-mode reaching condition of the specified sliding surface.

Finally, an illustrative example is provided to show the usefulness and effectiveness of the proposed design method.