关键词: 开放式结构产品, 智能制造系统, 多智能体, 车间调度, 时间自动机

Abstract: Open Architecture Product (OAP) puts forward higher requirements for the planning and implementation of manufacturing system.The manufacturing process in the shop floor environment is highly dynamic and time-varying,so the unpredictability in the shop floor environment must be considered.Aiming at the problem of abnormal event disturbance represented by machine breakdown,a scheduling execution mechanism based on queue control was proposed,which could not only guarantee the manufacturing process according to the scheduled scheduling plan with no disturbance of shop floor system,but also modify the queue parameters in real time to ensure the reliability of the shop floor system's operation.Aiming at the problem of real-time scheduling with incomplete information of machine breakdown,a automata based method of monitoring abnormal events and a method of real-time scheduling based on multi-agent model and queue control mechanism were proposed.In the standard example experiment,the average deviation percentage PD of the combination rule of ECP and MWR was 4.591%,which was closer to the theoretical optimal solution.Engineering application experiments showed that the real-time scheduling method of intelligent manufacturing shop floor based on multi-agent was a fully distributed coordination and decision-making method based on event monitoring,which could take into account the real-time nature of shop floor scheduling and the quality requirements of scheduling results.

Key words: open architecture product, intelligent manufacturing system, multi-agent, shop floor scheduling, timed automata