Method for Simultaneously Considering Customer Support Dates and Customer Request Dates
First Claim
1. A method of production planning that considers multiple due dates for providing the same resource to the same demand item, wherein said multiple due dates comprise a first date when said resource can be provided to said demand item, and a later second date when said resource must be provided to said demand item, said method comprising:
- creating, from a single part number, a first part number associated with providing said resource to said demand item by said first date;
creating, from said single part number, a second part number associated with providing said resource to said demand item by said second date;
performing production planning for both said first part number and said second part number to determine when said resource can be provided to said demand item; and
selecting one of said first part number and said second part number to satisfy said demand item.
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Abstract
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.
13 Citations
21 Claims
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1. A method of production planning that considers multiple due dates for providing the same resource to the same demand item, wherein said multiple due dates comprise a first date when said resource can be provided to said demand item, and a later second date when said resource must be provided to said demand item, said method comprising:
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creating, from a single part number, a first part number associated with providing said resource to said demand item by said first date; creating, from said single part number, a second part number associated with providing said resource to said demand item by said second date; performing production planning for both said first part number and said second part number to determine when said resource can be provided to said demand item; and selecting one of said first part number and said second part number to satisfy said demand item. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of production planning that considers multiple due dates for providing the same resource to the same demand item, wherein said multiple due dates comprise a first date when said resource can be provided to said demand item, and a later second date when said resource must be provided to said demand item, said method comprising:
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solving a production planning model based upon said first date to produce a first solution; re-solving said production planning model based upon said second date to produce a second solution; and optimizing between said first solution and said second solution. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A program storage device readable by machines, tangibly embodying a program of instructions executable by the machine to perform a method of production planning that considers multiple due dates for providing the same resource to the same demand item, wherein said multiple due dates comprise a first date when said resource can be provided to said demand item, and a later second date when said resource must be provided to said demand item, said method comprising:
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creating, from a single part number, a first part number associated with providing said resource to said demand item by said first date; creating, from said single part number, a second part number associated with providing said resource to said demand item by said second date; performing production planning for both said first part number and said second part number to determine when said resource can be provided to said demand item; and selecting one of said first part number and said second part number to satisfy said demand item. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification