Abstract
This paper considers the fault detection problem of distributed networked control systems (DNCS) 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.
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Zong, Q., Zeng, F., Liu, W. et al. Sliding Mode Observer-Based Fault Detection of Distributed Networked Control Systems with Time Delay. Circuits Syst Signal Process 31, 203–222 (2012). https://doi.org/10.1007/s00034-011-9374-x
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DOI: https://doi.org/10.1007/s00034-011-9374-x