Sliding mode observer-based fault detection of distributed networked control systems with time delay. (English) Zbl 1242.93023

Summary: This paper considers the fault detection problem of Distributed Networked Control Systems (DNCSs) with time delay. A sliding mode observer-based fault detection method for a two-level DNCS is presented and two different situations are considered. When all the states of the system are available for measurement, we convert the fault detection problem to a sliding motion stable and reachable problem. When some states of system are not available for measurement, we design a transformation matrix to separate the measurable states and the unknown states, and then different sliding mode observers for those unknown states are developed to achieve fault detection. Finally, a numerical example is provided to illustrate the effectiveness of the proposed method with simulation results.


93B07 Observability
93B12 Variable structure systems
94C12 Fault detection; testing in circuits and networks
Full Text: DOI


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