Research Article
Modeling and Optimizing Based on OTCPN in Multi-Tier Shuttle Warehousing System
Table 2
Comparison of the total picking time
under TA-opt and IS-opt.
| Tier | Column | NO-opt | TA-opt | IS-opt | TA-opt + IS-opt |
| T = 5 | C = 30 | 926.19 | 637.17 | 688.44 | 430.65 | C = 60 | 1228.55 | 763.98 | 750.64 | 461.70 | C = 90 | 1492.35 | 882.27 | 904.25 | 554.35 | C = 120 | 1697.25 | 999.66 | 954.70 | 632.75 | C = 150 | 1967.31 | 1169.38 | 1085.70 | 734.92 |
| T = 7 | C = 30 | 1024.11 | 939.88 | 711.30 | 586.41 | C = 60 | 1073.26 | 1015.20 | 823.15 | 594.49 | C = 90 | 1300.96 | 1185.26 | 974.34 | 635.53 | C = 120 | 1441.50 | 1272.07 | 1111.62 | 684.82 | C = 150 | 1603.75 | 1372.90 | 1279.63 | 774.12 |
| T = 9 | C = 30 | 1309.25 | 1235.46 | 755.76 | 748.65 | C = 60 | 1385.67 | 1336.51 | 789.61 | 754.27 | C = 90 | 1520.07 | 1478.24 | 879.46 | 777.04 | C = 120 | 1721.10 | 1585.83 | 1023.06 | 808.86 | C = 150 | 1891.16 | 1664.27 | 1149.85 | 855.72 |
| T = 11 | C = 30 | 1528.06 | 1438.08 | 911.52 | 905.52 | C = 60 | 1852.00 | 1721.46 | 963.75 | 915.17 | C = 90 | 1976.43 | 1873.07 | 1077.20 | 922.79 | C = 120 | 2234.68 | 2027.14 | 1244.16 | 940.08 | C = 150 | 2280.20 | 2018.44 | 1422.51 | 990.49 |
| T = 13 | C = 30 | 2003.48 | 1817.92 | 1192.24 | 1067.31 | C = 60 | 2237.61 | 2145.90 | 1327.79 | 1075.82 | C = 90 | 2514.35 | 2176.27 | 1480.56 | 1074.65 | C = 120 | 2612.89 | 2289.99 | 1631.91 | 1097.09 | C = 150 | 2825.74 | 2530.31 | 1863.11 | 1103.45 |
| T = 15 | C = 30 | 2234.74 | 2081.13 | 1225.99 | 1129.87 | C = 60 | 2391.40 | 2062.92 | 1265.52 | 1232.53 | C = 90 | 2642.82 | 2450.26 | 1250.27 | 1249.27 | C = 120 | 2897.73 | 2660.22 | 1353.61 | 1239.08 | C = 150 | 2998.06 | 2944.18 | 1470.10 | 1266.13 |
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