Petri net model for diagnosis of permanent faults of a hydraulic system |
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Authors: | ZHANG Bo DOU Li-hu MA Tao LI Peng |
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Affiliation: | ZHANG Bo,DOU Li-hua,MA Tao,LI Peng (School of Automation,Beijing Institute of Technology,Beijing 100081,China) |
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Abstract: | Petri net model is applied to diagnose the permanent fault of hydraulic system within the framework of interpreted Petri net. The permanent fault is described as redundant structure of the model. A definition and a theorem are proposed to determine the diagnosability of the hydraulic system. The relations bwtween the diagnosability and other structure properties are also discussed. An example of actual hydraulic system is presented and its permanent fault can be diagnosed by the proposed method efficiently. |
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Keywords: | fault diagnosis Petri nets hydraulic system diagnosability |
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