| 摘要 |
<p>PURPOSE:To improve the operability by obtaining operating ratio for each port of a loading and unloading port according to the number of operations of a stack crane for each loading and unloading port and all the number of operations at all loading and unloading ports, obtaining operating priority for each loading and unloading port and controlling the stack crane according to this priority. CONSTITUTION:The number of operations for each loading port Ai, Bi..., and for each unloading port Ao, Bo... of a stack crane 15 is calculated by a host computer 20 and all the number of operations at all the loading and unloading ports are calculated. Then, operating ratio for each loading and unloading port is computed from the all the number of operations and the number of operations for each loading and unloading port. According to this operating ratio, operating priority for each loading and unloading port is determined. Then, loading and unloading port for which the stack crane operates is selected in accordance with this priority. According to this constitution, operability can be improved.</p> |
