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An Intelligent Systems Architecture for Manufacturing

The Intelligent Systems Architecture for Manufacturing (ISAM) is a reference model architecture for intelligent manufacturing systems. It is intended to provide a theoretical framework for the development of standards and performance measures for intelligent manufacturing systems. It also intended to provide engineering guidelines for the design and implementation of intelligent control systems for a wide variety of manufacturing applications. ISAM consists of a hierarchically layered set of intelligent processing nodes organized as a nested series of control loops. In each node, tasks are decomposed, plans are generated, world models are maintained, feedback from sensors is processed, and control loops are closed. In each layer, nodes have a characteristic span of control, with a characteristic planning horizon, and corresponding level of detail in space and time. Nodes at the higher levels deal with corporate and production management, while nodes at lower levels deal with machine coordination and process control. ISAM integrates and distributes deliberative planning and reactive control functions throughout the entire hierarchical architecture, at all levels, with all spatial and temporal scales.