| 摘要 |
<p>A cargo handling system includes a crane and a power supply device. The crane includes an electrical storage device, a crane driving unit, and a charge instructing unit. The electrical storage device accumulates an electric power supplied from the power supply device. The crane driving unit utilizes the electric power accumulated in the electrical storage device and the electric power supplied from the power supply device as driving sources. The charge instructing unit outputs a charge instruction making charging the electrical storage device with an electric power to the electrical storage device in such a manner that the storage amount of the electrical storage device becomes a predetermined target value on the basis of the state of the electrical storage device and the state of the crane.</p> |
