Fault diagnosis in DESs modeled by partially observed Petri nets

In this paper, we focus on fault diagnosis in discrete event systems (DESs) which are modeled by partially observed Petri nets. We consider not only the case where faults occur either on transitions or places, but also a more general case where faults occur on both transitions and places at the same time. Some faults cannot be diagnosed directly due to the unobservability of some transitions and places in a partially observed Petri net. We...