PARALLEL CONTROL SYSTEM BASED ON PETRI NET

摘要

PURPOSE: To deal with a graph provided with any number of transitions by dealing with the required number of transitions by using LSI chips including the ignition logic circuits of Petri net graphs, and performing the cascade connection of these plural LSI chips. ;CONSTITUTION: The ignition logic circuit for checking the possibility of ignition is provided with an input place discriminating means 101 for storing the information of an input place connected to the transition, output place discriminating means 102 for storing the information of an output place connected to the transition, token state storage/update means 103 for storing/updating the token state of the place, token update bus control means 104 for controlling whether data are outputted to a shared bus in order to share the state of token with another execution order controller by performing logical arithmetic with the output of a chip select means 105, which discriminates whether any chip is selected or not, and checking the possibility of ignition and the token state inside the same kind of the other LSI chip is matched.;COPYRIGHT: (C)1994,JPO