Title
An Analytical Model for Conveyor-Based Material Handling System With Crossovers in Semiconductor Wafer Fabs
Abbreviated Journal Title
IEEE Trans. Semicond. Manuf.
Keywords
Analytical models; automated material handling system (AMHS); conveyors; wafer fabrication; FABRICATION FACILITY; DESIGN; PERFORMANCE; METHODOLOGY; DISCRETE; LAYOUT; Engineering, Manufacturing; Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter
Abstract
This paper proposes a queueing-based analytical model useful in the design of closed-loop conveyor-based automated material handling system (AMHS), which has been identified as an effective material handling alternative in next-generation semiconductor wafer fabrication facilities. The model presented in this paper represents practical hardware considerations of the AMHS, such as turntables and crossovers. The objective is to accurately estimate the expected work-in-process (WIP) on the conveyor, queueing delays due to congestion at intersection points, as well as assessing the conveyor system stability. A four-phase approach is used to estimate the WIP. The proposed model is applied to the SEMATECH virtual 300mm wafer fab. Experimental results demonstrate that in the worst case where the maximum number of crossovers is used and the traffic on the conveyor is high, the analytical model performs very well with average relative errors of 4.2%.
Journal Title
Ieee Transactions on Semiconductor Manufacturing
Volume
23
Issue/Number
3
Publication Date
1-1-2010
Document Type
Article
Language
English
First Page
468
Last Page
476
WOS Identifier
ISSN
0894-6507
Recommended Citation
"An Analytical Model for Conveyor-Based Material Handling System With Crossovers in Semiconductor Wafer Fabs" (2010). Faculty Bibliography 2010s. 585.
https://stars.library.ucf.edu/facultybib2010/585
Comments
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