| 摘要 |
<p>PROBLEM TO BE SOLVED: To flexibly perform the simulation of process elements working being influenced by one another within a certain process while it exists independently such as a machine tool. SOLUTION: An expanded Petri net is produced by an expanded Petri net input means 2 on the basis of the fed information concerning the process and held by a Petri net holding means 4, and by reference to a Petri net condition updating means 6, the condition which can be taken among the elements are updated so that a simulated evaluation is conducted for the applicable process, and the obtained hysteresis is emitted and displayed by a condition updating hysteresis output means 7, and each element in the desired part of each expanded Petri net is divided by a dividing means so as to make re-definition as a new expanded Petri net, and the condition change of the elements related among the different expanded Petri nets is monitored by a communication means, and thereupon transmission of the information is conducted among different elements.</p> |
