First, the definition and algorithm of “Grey Petri Net” was set up to solve the problem that how to set up production buffer of Critical Equipment. Second, a Petri Net analyzing model is set up to illustrate the principle of the buffer before the critical equipment. Third, the author establishes the buffer Petri net then simplifies and solves it. Furthermore, the genetic algorithm was applied to get the optimal result. At last an example is shown the feasibility and effectiveness of the method, getting a good result.
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