Multifacetted modelling and discrete event simulation
Multifacetted modelling and discrete event simulation
Object-oriented modeling and design
Object-oriented modeling and design
An integrated modelling method to support manufacturing systems analysis and design
Computers in Industry
Computers in Industry - ASI 1997
International Journal of Computer Integrated Manufacturing
Robotics and Computer-Integrated Manufacturing
Architecture for modeling, simulation, and execution of PLC based manufacturing system
Proceedings of the 40th Conference on Winter Simulation
Virtual prototyping of automated manufacturing systems with Geometry-driven Petri nets
Computer-Aided Design
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Proposed in the paper is an object-oriented methodology to create a virtual flexible manufacturing system (FMS) model. The proposed virtual FMS model consists of four types of objects: the virtual device model (object model), the transfer handler model (functional model), the state manager model, and the flow controller model (dynamic model). A virtual device model consists of two parts: shell and core. To improve the reusability of a virtual device model, the shell part is designed to adapt to different FMS configurations. For the fidelity of the virtual FMS model, a transfer handler model has a set of device-level commands imitating the physical mechanism of a transfer. As a result, we can expect more accurate simulation results. The flow controller model makes decisions on firable transfers based on decision variables, which are maintained by the state manager model. For the implementation of the proposed virtual FMS model, this paper employs Discrete Event Systems Specifications (DEVS) formalism, which supports the specification of discrete event models in a hierarchical, modular manner. The proposed virtual FMS model has been implemented and tested with many examples.