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Table 4 Percentage of cell-blocked time due to lack of transportation for the feasible scenarios

From: Case study: evaluation of the automation of material handling with mobile robots

Cells blocked time %
Scenarios Total AMRs needed AVE 99% CI LB 99% CI UB
Scenario 3 Conv 3 AMRs 0.03% 0.00% 0.07%
Scenario 4 Conv 4 AMRs 0.03% 0.00% 0.05%
Scenario 2 Tand 3 AMRs SD1 DFs SD1 DFs SD1 DFs
0.00% 1.7% 0.00% 1.70% 0.00% 1.82%
Scenario 1 SL3 3 AMRs SD1 DF4 + Srt DF5 + DF6 SD1 DF4 + Srt DF4 + Srt SD1 DF4 + Srt DF5 + DF6
0.00% 0.31% 0.02% 0.00% 0.00% 0.00% 0.00% 0.66% 0.05%
  1. The minimum number of AMR required is three