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.

TierColumnNO-optTA-optIS-optTA-opt + IS-opt

T = 5C = 30926.19637.17688.44430.65
C = 601228.55763.98750.64461.70
C = 901492.35882.27904.25554.35
C = 1201697.25999.66954.70632.75
C = 1501967.311169.381085.70734.92

T = 7C = 301024.11939.88711.30586.41
C = 601073.261015.20823.15594.49
C = 901300.961185.26974.34635.53
C = 1201441.501272.071111.62684.82
C = 1501603.751372.901279.63774.12

T = 9C = 301309.251235.46755.76748.65
C = 601385.671336.51789.61754.27
C = 901520.071478.24879.46777.04
C = 1201721.101585.831023.06808.86
C = 1501891.161664.271149.85855.72

T = 11C = 301528.061438.08911.52905.52
C = 601852.001721.46963.75915.17
C = 901976.431873.071077.20922.79
C = 1202234.682027.141244.16940.08
C = 1502280.202018.441422.51990.49

T = 13C = 302003.481817.921192.241067.31
C = 602237.612145.901327.791075.82
C = 902514.352176.271480.561074.65
C = 1202612.892289.991631.911097.09
C = 1502825.742530.311863.111103.45

T = 15C = 302234.742081.131225.991129.87
C = 602391.402062.921265.521232.53
C = 902642.822450.261250.271249.27
C = 1202897.732660.221353.611239.08
C = 1502998.062944.181470.101266.13