Title :
Modelling of exception handling in manufacturing cell control and its application to PLC programming
Author :
Hasegawa, Masaki ; Takata, Masayuki ; Temmyo, Takashi ; Matsuka, Hideo
Author_Institution :
IBM Japan, Tokyo, Japan
Abstract :
A model based on a Petri net (PN) is proposed for controlling flexible manufacturing systems (FMSs). The model can describe not only normal sequential processes but also interruptive exceptional handling processes by means of simple structures. A layered structure and two types of token are introduced into a PN to describe exception handling and error recovery. An application in which this model was used to program a programmable logic controller (PLC) is described. The description of cell control can be simplified by the model
Keywords :
Petri nets; flexible manufacturing systems; programmable controllers; FMS; PLC programming; Petri net; error recovery; flexible manufacturing systems; interruptive exceptional handling processes; layered structure; manufacturing cell control; programmable logic controller; Automatic control; Control systems; Flexible manufacturing systems; Production systems; Programmable control; Relays; Robot sensing systems; Robotic assembly; Robotics and automation; Virtual manufacturing;
Conference_Titel :
Robotics and Automation, 1990. Proceedings., 1990 IEEE International Conference on
Conference_Location :
Cincinnati, OH
Print_ISBN :
0-8186-9061-5
DOI :
10.1109/ROBOT.1990.126031
