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| Logic Modeling and PLC Program Design based on DEVS for Flexible Manufacturing System |
| WANG Bing, JIANG Haifan, DING Guofu |
| (School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China) |
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Abstract Aiming at problems of complicated logic, long commissioning cycle and high commissioning cost in the design process of flexible manufacturing system control scheme, a virtual commissioning method based on experimentable digital twin was proposed. This method established the twin model of physical system in a layered manner, and established a three-layer logic model of equipment layer, unit layer, and system layer based on the extended form of discrete event system specification. The logic model was repeatedly verified and modified through simulation. The mapping rule from logic model to PLC program was established to realize the rapid design of PLC program. Finally, taking a FMS as an example, the process of logic modeling and PLC program design were demonstrated in detail. The feasibility and effectiveness of the proposed method were verified.
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2021, 
