Automated storage and Retrieval (AS/R) systems have had
a significant impact on storage and retrieval of finished
goods, work-in-process, and raw materials and supplies. A
microcomputer-based simulation model was developed to
evaluate different unit load AS/R systems serving multiple
input sources and output destinations. The simulation results
were statistically analyzed on different performance measures
including throughput, mean waiting times maximum waiting
times and rejects.
The results showed that for single-dock, square-in-time
layouts, the class based arrangement produced significantly
higher throughput for all scheduling policies. Among the
scheduling policies, the relief nearest neighbor produced
consistently higher throughput. Comparing square-in-time
versus non-square-in-time layouts, the square-in-time layout
performance was better; the performance deteriorated as
deviations from square-in-time increased. For the two dual-dock
layouts, at lower arrival rates the dedicated layout
produced higher throughput; there was no significant
difference between the two layouts at higher arrival rates. / Graduation date: 1992
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/37296 |
| Date | 14 January 1992 |
| Creators | Shroff, Raj N. |
| Contributors | Randhawa, Sabah |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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