关键词: 智能装配系统, 管控一体, 物联网, Petri网, 装配过程

Abstract: Aiming at the realistic significance of Internet of Things(IoT)technology on the development of manufacturing system,with the object of constructing the interconnection perception and intelligent efficiency assembly system,the concept of Management and Control Integrated Intelligent Assembly System based on IoT(MCIIAS-IoT)was put forward based on analyzing the application mode of IoT technology in the mechanical product assembly system,aiming at.To solve the analysis and optimization problems of MCIIAS-IoT,Timed-based Colored Object-Oriented Petri Net(TCOPN)was adapted to abstract MCIIAS-IoT to some collections of objects,which were consisted of assembly units and functional modules.According to the process constraint and logical relations between each module and unit,the transitive relationship of messages for MCIIAS-IoT was determined.The communications between units and modules driven by message were achieved,and TCOPN model for MCIIAS-IoT was established.The knowledge rules were adopted to promote the ability of autonomy and decision-making for TCOPN model.A case study of the engine tightening process was presented to verify the feasibility and effectiveness of proposed modeling approach.

Key words: intelligent assembly system, control and management integration, Internet of things, Petri net, assembling process