A Novel Approach to Reliability Analysis Using Petri Nets and Ladder Logic Diagrams

In this paper the dynamic modeling of repairable and standby components of complex systems is analyzed using Petri Nets and ladder logic diagrams. The use of Petri Nets as modelling of a complex system avoids two basic disadvantages of Markov chain analysis. First, the Petri Net model does not grow in size as increasing the number of components and second, Markov chain has been limited to the exponential probability distribution. Petri-LLD software is used for building Petri Net models and then the Petri Net models are converted to ladder logic diagrams for reliability analysis.