Assignment:
An AGVS will be used to satisfy material flows indicated in the From-To Chart in the following table, which shows deliveries per hour between stations (above the slash) and distances in meters between stations (below the slash). Moves indicated by "L" are trips in which the vehicle is loaded, while "E" indicates moves in which the vehicle is empty. A traffic factor = 0.85 is assumed. Assume availability A = 0.90. Speed of an AGV = 0.9 m/s If load handling time per delivery = 1.0 min, determine the number of vehicles needed to satisfy the indicated deliveries per hour?
| To: |
1 |
2 |
3 |
4 |
| From: 1 |
0/0 |
9L/90 |
7L/120 |
5L/75 |
| 2 |
5E/90 |
0/0 |
0/NA |
4L/80 |
| 3 |
7E/120 |
0/NA |
0/0 |
0/NA |
| 4 |
9E/75 |
0/NA |
0/NA |
0/0 |
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