Two-degree-of-freedom magnetic suspension device

Abstract

The invention relates to a two-degree-of-freedom magnetic suspension device, and aims to overcome the problems that the float of the existing push-down magnetic suspension device is difficult to placeand has poor stability and cannot move. The device comprises a float and a magnetic base. The float is located on a suspension plane above the magnetic base. Four excitation coils with magnetic coresand a permanent magnet array are fixed on the upper surface of the chassis, and the permanent magnet array is distributed around the outer side of the four excitation coils with the magnetic cores. The four excitation coils with the magnetic cores and the permanent magnet array are symmetrical around the center of the upper surface of the chassis. A float position monitoring unit is arranged at the center of the four excitation coils with the magnetic cores. A float translation control unit is used for obtaining a desired position value. A PD controller is used for comparing the desired position value with the current position value to generate a position deviation signal. The position deviation signal is input to the excitation coils with the magnetic cores to change the electromagneticresultant force of the excitation coils with the magnetic cores acting on the float.

Description

technical field [0001] The invention relates to a magnetic levitation device, in particular to a levitation device capable of two-degree-of-freedom movement on a levitation plane. Background technique [0002] The basic principle of the existing push-down magnetic levitation device is that the float is located at the center of the upper part, and an excitation coil and a ring magnet are installed below. This can make the float stably suspend at the center of the ring magnet with a certain height. [0003] However, although the above-mentioned push-down magnetic levitation device can achieve a levitation effect, when placing the float, it depends entirely on personal feeling to place it, which makes it difficult for most people to place it successfully. Even if some magnetic levitation devices are installed with four LEDs in four directions of the bottom plate, when the position of the float is not placed accurately, the LEDs in the corresponding directions will go out or gl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a two-degree-of-freedom magnetic levitation device in order to overcome the problems of the existing push-down magnetic levitation device that the float is difficult to place, has poor stability and cannot move

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