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Object-oriented approach to MCTPN for modeling flexible manufacturing systems.

Kuo, C.-H.; Huang, H.-P.; Yeh, M.-C.

In: International Journal of Advanced Manufacturing Technology, Vol. 14, No. 10, pages 737-749. 1998.

Abstract: Manufacturing industry is facing a stricter challenge than ever before owing to the rapid change in market requirements. Flexible manufacturing systems (FMSs) have a much greater capability than traditional fixed-type production systems for coping with the rapid change. In this paper, a modified colored timed Petri net (MCTPN) is developed to model the dynamic activities in an FMS. The MCTPN provides an object-oriented and modular method of modeling manufacturing activities. It includes color, time, modular and communication attributes. The features of object-oriented modeling allow the FMS to b modeled with the properties of classes, objects and container trees. Since the system activities can be encapsulated and modularized by the proposed MCTPN, the manufacturing systems can be easily constructed and investigated be the system developers. It makes the concept of software IC possible for modeling complex FMSs. Once all of the MCTPN objects are well defined, the developers need to consider only the interfaces and operations relating to the MCTPN objects. In order to demonstrate the capability of proposed MCTPN, the FMS in the Manufacturing Automation Technology Research Center (MATRC) of the National Taiwan University will be simulated and justified by using the proposed MCTPN along with the G2 expert system.

Keywords: MCTPN, colored Petri nets, flexible manufacturing systems, modular modeling, object-oriented approach, timed Petri nets.


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