To overcome CNP's (Contract Net Protocol) defects in Shop-Floor Scheduling System based MAS, a new method was presented dealing with task distributing and scheduling based on GPGP (Generalized Partial Global Planning) coordination mechanisms, and TAEMS (Task Analysis, Environment Modeling and Simulation language). A task/capability environment model and the process of scheduling part were put forward that can provide the basic structure of knowledge-based scheduling. In MM-MES, a manufacturing execution system based MAS, they were implemented to research distributed manufacturing system's scheduling and coordination.
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