Method and system for production planning
First Claim
1. A computer implemented method for planning a production schedule within a factory comprising the steps of:
- determining said capacity model for said factory, said step of determining said capacity model comprising the steps of;
determining a plurality of contiguous time intervals;
partitioning said factory into a plurality of resource groups; and
determining a processing capacity for each of said resource groups for each of said contiguous time intervals;
for each job to be planned, dividing said job into a plurality of processing segments;
representing each of said processing segments with a corresponding fuzzy set;
inserting and removing said fuzzy set within said capacity model until said job is planned;
predicting a completion date and a confidence level for each of said jobs and scheduling each of said jobs based on said completion date and said confidence level.
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Abstract
A method for planning a production schedule within a factory is disclosed herein. A capacity model is determined for the factory. The capacity model is determined by determining a plurality of contiguous time intervals, partitioning the factory into a plurality of resource groups, and determining a processing capacity for each of the resource groups for each of the time intervals. For each job to be planned, the job is divided into a plurality of processing segments each of which is represented with a corresponding fuzzy set. The fuzzy set representations are inserted and removed within the capacity model until the job is planned. A completion date and a confidence level can be predicted for each of the jobs. In addition, the jobs may be released to the factory and devices fabricated according to the requirements of the jobs. Other systems and methods are also disclosed.
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Citations
19 Claims
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1. A computer implemented method for planning a production schedule within a factory comprising the steps of:
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determining said capacity model for said factory, said step of determining said capacity model comprising the steps of; determining a plurality of contiguous time intervals; partitioning said factory into a plurality of resource groups; and determining a processing capacity for each of said resource groups for each of said contiguous time intervals; for each job to be planned, dividing said job into a plurality of processing segments; representing each of said processing segments with a corresponding fuzzy set; inserting and removing said fuzzy set within said capacity model until said job is planned;
predicting a completion date and a confidence level for each of said jobs and scheduling each of said jobs based on said completion date and said confidence level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A computer system for planning a production schedule within a factory comprising:
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circuitry for determining a capacity model for said factory; a memory device for storing said capacity model; circuitry for dividing a job to be planned into a plurality of processing segments; circuitry for representing each of said processing segments with a corresponding fuzzy set; circuitry for inserting and removing said fuzzy set within said capacity model until said job is planned; circuitry for predicting a completion date and a confidence level for said job;
circuit for scheduling each of said jobs based on said completion date and said confidence level. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification