| 摘要 |
A linear motor has two relatively members moveable a coil mounted to one of the two members, a magnet mounted to the other of the two members, a circulating pump for circulating a cooling medium via a circulating pipe in an outer tube surrounding the coil, a pressure detecting device for detecting the pressure of the cooling medium, and a control system for controlling the operation of the circulating pump based on the detected pressure value from the pressure detecting device.
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