System and method for production planning utilizing on-line...

Data processing: database and file management or data structures – Database design – Data structure types

Reexamination Certificate

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C707S793000, C707S793000, C707S793000, C705S002000

Reexamination Certificate

active

07451132

ABSTRACT:
A combinatorial search method implemented in a computer control system utilizes on-line state-space planning of operations for multi-step production processes. The planner considers various possible combinations of actions, searching for one that correctly transforms the initial state of the object into the specified desired final state. Each combination of actions the planner considers is called a search node, with each node containing a plan representing a series of actions of various machines on a single object and also containing the predicted state of the object with those actions applied either forward or backward. The method includes determining which of the search nodes to extend further at each search iteration and if the object state in the chosen search node conforms to the desired state of the object, or whether actions should be added to the node's plan. Actions that are applicable to the chosen node's object state are selected, transformations are applied to the attributes, and the resulting plan is returned to the system.

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U.S. Appl. No. XX/XXX,XXX entitled “Exception Handling in Manufacturing Systems Combining On-Line Planning and Predetermined Rules”, Wheeler Ruml et al., filed May 27, 2004.
U.S. Appl. No. XX/XXX,XXX entitled “System and Method Utilizing Temporal Constraints to Coordinate Multiple Planning Sessions”, Wheeler Ruml et al., filed May 27, 2004.

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