Abstract: Few studies are done on industrial process measurement and control systems (IPMCS) real-time characteristic evaluation. So the paper provided an evaluation method Of IPMCS real-time characteristic based on stochastic Petri net. First,FB was used to model IPMCS. Then the model was transformed to SPN model. Second, SPN model was transformed to Markov Chain (MC). Because an SPN model is isomorphic to a continuous time MC. Lastly, based on MC's transition matrix and steady probability, IPMCS real-time characteristic was evaluated. An example was given to illustrate how to evaluate IPMCS real-time characteristic. The method can give out real-time characteristic quantitative data which can provide reference when designing IPMCS.

Key words: IPMCS, Stochastic petri net, Evaluation