Modeling Method of Equipment Virtual Training Process Based on Improved Petri Net

Abstract

In the modeling of equipment virtual training process, the basic Petri net is improved according to multiple operators’ state judgment, operation logic relationship and order co-operation feature. Since the basic Petri net was unable to describe multiple operators’ state problems simultaneously, we adopted the place coloring method. According to the problem that the basic Petri net can not describe the action time limitation, we employed the interval of input and output arc to figure out the problem. On the basis of the cooperative operation features of multiple operators, Petri net is extended through macro transition, and then we proposed an improved Petri net model of equipment virtual training process. Taking the leveling operation of a missile launch vehicle as an example, we established an improved Petri net model, which verify the feasibility and superiority of the improved Petri model.