摘要:
Approximating cycle times within a material flow network is disclosed. One embodiment includes assigning an approximate cycle time for completion of a part number PN within the material flow network by using a model that rounds the approximate cycle time to a nearest aggregate time period and adjusting the assigned approximate cycle time based on a mathematical function representing an aggregate accuracy of an aggregation of cycle times throughout the material flow network.
摘要:
Approximating cycle times within a material flow network is disclosed. One embodiment includes assigning an approximate cycle time for completion of a part number PN within the material flow network by using a model that rounds the approximate cycle time to a nearest aggregate time period and adjusting the assigned approximate cycle time based on a mathematical function representing an aggregate accuracy of an aggregation of cycle times throughout the material flow network.
摘要:
A method, system, and program storage device for implementing the method of controlling a manufacturing system, wherein the method comprises providing a plurality of workpieces to be processed on a processing tool, the plurality of workpieces located at processing stations prior to the processing tool, determining auxiliary equipment allocation needs for the processing tool based on characteristics associated with the plurality of workpieces prior to the workpieces arriving at the processing tool, and sending auxiliary equipment to the processing tool based on the allocation needs prior to the workpieces arriving at the processing tool. According to an embodiment of the invention, the processing tool comprises a photolithographic system, the auxiliary equipment comprises a reticle, and the plurality of workpieces comprise semiconductor substrates.
摘要:
The present invention provides a method, system, and computer program product for improved flow of development lots in a manufacturing facility. A method in accordance to one embodiment of the present invention comprises: establishing at least one target for processing of a set of development lots in the manufacturing facility; monitoring a progress of the set of development lots in the manufacturing facility; comparing the progress of the set of development lots against the at least one target; establishing at least one suggested action for the set of development lots if the progress of the set of development lots deviates from the at least one target; and deciding which development lots in the set of development lots to assign to at least one tool in the manufacturing facility, wherein the at least one suggested action is incorporated into the assignment decision.
摘要:
A method, system, and program storage device for implementing the method of controlling a manufacturing system, wherein the method comprises providing a plurality of workpieces to be processed on a processing tool, the plurality of workpieces located at processing stations prior to the processing tool, determining auxiliary equipment allocation needs for the processing tool based on characteristics associated with the plurality of workpieces prior to the workpieces arriving at the processing tool, and sending auxiliary equipment to the processing tool based on the allocation needs prior to the workpieces arriving at the processing tool. According to an embodiment of the invention, the processing tool comprises a photolithographic system, the auxiliary equipment comprises a reticle, and the plurality of workpieces comprise semiconductor substrates.
摘要:
The invention provides a method of rescheduling timing of when items on purchase orders are scheduled to be received in a linear programming production planning system. This methodology performs a pre-processing rescheduling of the timing of purchase order receipts into the earliest time period allowable in a pre-processing step. After this pre-processing, the invention solves the core production planning system equations using the rescheduled purchase order receipts. Then, the invention performs post-processing rescheduling, which sorts the purchase order receipts according to rescheduling flexibility, and subsequently sequentially reschedules the timing of each of the purchase order receipts in the order established by the sorting process. This process of sequentially rescheduling reschedules the timing of purchase order receipts into the latest time period allowable.
摘要:
The invention disclosed here is a method for achieving simultaneous consideration of multiple customer demand dates within an advanced planning system. The invention provides a method of production planning that considers multiple due dates. The invention solves a production planning model based upon the second (commit) date to produce a first solution, sorts the demand records in order of importance, and then re-solves the production planning model based upon the first (request) date to produce a second solution. The re-solving process is performed on each demand item in the sorted order of importance. The invention optimizes between the first solution and the second solution. Before re-solving the production planning model, the invention changes the lower bound constraints on backorder variables. The re-solving process changes the required date for a single demand item, and this re-solving process is repeated for all demand items that have a first (request) date that is before a corresponding required date. The invention reports the optimal solution produced during the optimizing process. The system and method integrate the consideration of multiple demand dates with an advanced planning system for optimizing established planning objectives (e.g. customer service, short lead times, low inventory, and prioritized allocation of supply and capacity) to compute a feasible production plan for the division.
摘要:
The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g., customer service, short lead times, low inventory, and prioritized allocation of supply and capacity) to compute a feasible production plan for the enterprise.
摘要:
The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g., customer service, short lead times, low inventory, and prioritized allocation of supply and capacity) to compute a feasible production plan for the enterprise.
摘要:
The invention provides a method and system for determining a production plan that includes a first step that determines the minimum number of manufacturing starts that are required to meet contractual obligations; and a second step which determines a production plan satisfying the minimum manufacturing starts together with other customer demands. More specifically, the invention presents a method of allocating production starts (e.g., wafer starts) in a manufacturing facility (e.g., wafer foundry) using a linear programming production planning system which performs a first stage of linear programming to satisfy only contractually mandated minimum production starts constraints followed by a second stage of linear programming to satisfy the additional constraints, once the minimum starts constraints are satisfied.