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**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.

### MSC:

93B07 | Observability |

93B12 | Variable structure systems |

94C12 | Fault detection; testing in circuits and networks |

### Keywords:

fault detection; distributed networked control systems; sliding mode observer; residual evaluation
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\textit{Q. Zong} et al., Circuits Syst. Signal Process. 31, No. 1, 203--222 (2012; Zbl 1242.93023)

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### References:

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