A fault diagnosis model based on Extended Fuzzy Timed Petri Nets applying to gas turbine

To resolve cause-missed in the fault diagnosis, Extended Fuzzy Timed Petri Nets (EFTPN) was used in this paper; Some tasks were done in this paper. First, a algorithm of EFTPN was defined in this paper. Second, some assumptions were given to the model and algorithm of fault diagnosis was built in this paper. The algorithm resolved the cause-missing-problem to the utmost by checking the states of all fault cause of the whole system at the time when a fault occurred. And the algorithm also found the primary cause. In the end, the model is proved to be availability by the example about fault diagnosis in this paper.