A proposal for a superconducting actuator using Meissner effect

IEEE Micro Electro Mechanical Systems, , Proceedings, 'An Investigation of Micro Structures, Sensors, Actuators, Machines and Robots' Pub Date : 1989-02-20 DOI:10.1109/MEMSYS.1989.77972

Y. Kim, M. Katsurai, H. Fujita

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引用次数: 21

Abstract

A superconducting actuator with magnetic levitation using Meissner effect in mu m order is proposed to remove the friction between moving elements and fixed elements in micromachines. The actuator, called Meissnac, is analyzed by the discrete surface current method. A driving method for the actuator is proposed. The driving force can be obtained by using the difference of the pitch of the stator and that of the slider, and the control of superconducting and normal states of superconductors. The control of the state can be achieved either by applying current over J/sub c/ to the superconductor or by heating it above T/sub c/. Maximum values of the levitating force and the driving force are 1.7 and 0.26 (N/m/sup 2/A/sup 2/). The lateral movement in a particular direction of a slider is obtained by choosing appropriate superconductors and by transforming them into the normal state. A scale model is fabricated using a YBaCuO high-T/sub c/ superconductor. The levitating force and the driving force of a scale model are 84 and 31 (mgf) when the slider is composed of a permanent magnet.<>

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一种利用迈斯纳效应的超导致动器的设计

为了消除微机械中运动元件与固定元件之间的摩擦，提出了一种利用μ m阶迈斯纳效应的超导磁悬浮执行器。采用离散表面电流法对Meissnac作动器进行了分析。提出了一种作动器的驱动方法。利用定子与滑块的螺距差，以及超导体的超导态和正常态的控制，可以获得电机的驱动力。状态的控制可以通过对超导体施加超过J/sub c/的电流或将其加热到T/sub c/以上来实现。悬浮力和驱动力的最大值分别为1.7和0.26 (N/m/sup 2/A/sup 2/)。通过选择合适的超导体并将其转化为正常状态，可以获得滑块在特定方向上的横向运动。采用YBaCuO高/低温/超导体制作了比例模型。当滑块由永磁体组成时，比例模型的悬浮力和驱动力分别为84和31 (mgf)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Micro Electro Mechanical Systems, , Proceedings, 'An Investigation of Micro Structures, Sensors, Actuators, Machines and Robots'

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