Dynamic scheduling method based on pheromone for semiconductor production line

A dynamic scheduling and production line technology, applied in data processing applications, comprehensive factory control, instruments, etc., can solve problems such as poor flexibility and changing queuing methods
CN1734382AInactive Publication Date: 2006-02-15TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2006-02-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a dynamic dispatching method on the base of pheromone in semi-conductive product line, which comprises the following steps: first, storing pheromone variation of each WIP which relates to the WIP delivery date, holding time of waiting processing equipment, pure processing time and production periodic multiplication factor; second, storing pheromone variation which relates to equipment load; then, integrating the WIP pheromone variation and relating equipment pheromone variation, generating a selective variation of each WIP; finally, elaborating them on the equipment according to the method which consists of short-term and long-term function index to improve multi-function index production or making system.
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Description

technical field

[0001] The present invention relates to a scheduling method, and more specifically, relates to a dynamic scheduling method for a semiconductor production line. The method uses a multi-objective optimization strategy to determine unfinished products (hereinafter referred to as work in progress, WIP) for each device on the semiconductor production line. ) competing processing priority. Background technique

[0002] In a production system using assembly line workshop processing, a conveyor system transports the WIP along the workbench, and at each workbench, a different process of the WIP is completed. In theory, the WIP visits each station once during a start-to-finish machining run. A semiconductor production line is different from most production systems that use assembly-line shop processing. In the semiconductor production line, WIP may visit the same workbench several times during the processing process. WIP has to go through several cleaning, oxidation,...

Claims

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