| Production scheduling system is the core of Enterprise Resource Planning (ERP), also the bottleneck of ERP. In the situation of agile and global manufacturing, many new problem of production scheduling research develops. This research direction comes from a cooperate project named Resource Management System based on Distributed Object Technology with SUN company. The paper is the extended use in a discrate part produce company. A Multi-Agent based on flexible process planning (FMASS) is presented in this paper to solve the agile scheduling problem.After deeply research of the current research achievement, according to the actual manufacture situation of the company, this paper build a job shop manage system which integrated both process route selection and produce scheduling. This paper designs a model of integrated system using hybrid modeling method of agents, four kinds of agents are built: task management agent, resource management, task agent and resource agent. Based on this, the hybrid architecture of multi-agent integrated the hierarchy and the heterarchy is also proposed after analyzing. There are horizontal and vertical negotiations in the architecture of FMASS in order to overcome drawbacks of hierarchy and heterarchy, and to make the FMASS agile and flexible responses capabilities and a feasible, robust and near optimized schedulers.At last the multi-agent scheduling system is built up using distributed object. In the support of RMI technology, the communication of agents is implemented. We also did some experiments about the integerate system, compares the scheduling results with some other scheduling algorithm. The results have successfully shown that the approach is capable of generating feasible schedulers in manufacturing environment. The experiments have also demonstrated that it has incorporated the features of adaptive and agility to changes in production diversity and environment configuration. |
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