Basic study on linear actuator using superconducting coil
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There are not so many cryogenic linear pumps, because linear pumps need a high power for driving themselves compared to centrifugal pumps. Then, we try to apply superconducting coil to a linear motor for cryogenic pump. Static and dynamic characteristics about the linear motor are discussed. The total linear motor system composed of the linear motor, a PID controller, a displacement sensor and a power amplifier. This paper discusses static and dynamic characteristics for the linear motor at room temperature and in liquid nitrogen. Step responses and follow-up control are performed in liquid nitrogen.
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