CONWIP-like Lot Release for a Wafer Fabrication Facility with Dynamic Load Changes
نویسنده
چکیده
In numerous wafer fabrication facilities (wafer fabs) the load changes dynamically. Current load release control schemes are usually developed and tested in a constant load environment. In this paper, we discuss four CONWIP-like lot release policies and assess their ability to buffer variability generated by the load changes and to keep the lot release variability as low as possible. All control approaches reduce the WIP and cycle time variability inside the fab but at the cost of increasing the total WIP and cycle times of the lots compared to an uncontrolled fab.
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