Double-magnetic-source magnetic circuit structure of permanent-magnet angle vibration table

Abstract

A double-magnetic-source magnetic circuit structure of a permanent-magnet angle vibration table comprises an upper magnetic steel, a lower magnetic steel, a top cover, an outer wall, a base and an air gap between the upper magnetic steel and the lower magnetic steel, wherein the top cover is arranged on the outer wall in an erected mode, the outer wall is fixed on the base, the upper magnetic steel is fixed at the bottom of the top cover, and the lower magnetic steel is fixed at the top of the base; a moving coil is of a disc-type structure and is located between the upper magnetic steel and the lower magnetic steel, and the upper magnetic steel and the lower magnetic steel are respectively in clearance fit with the moving coil; the moving coil comprises at least one moving coil unit; each moving coil unit includes a base body and a coil assembly; each coil assembly includes a first coil and a second coil, wherein the first coil and the second coil are formed by winding one wire; each coil includes an effective wire assembly and a connection wire assembly; every two adjacent effective wire assemblies form one Ampere force generating portion; each Ampere force generating portion corresponds to a magnetic field, and the directions of the currents in every two adjacent Ampere force generating portions are opposite. The double-magnetic-source magnetic circuit structure of the permanent-magnet angle vibration table has the advantages of being simple and compact in structure, high and even in magnetic induction intensity and stable in air-gap magnetic field.

Description

technical field [0001] The invention relates to a magnetic circuit structure of an angular vibrating table, in particular to a dual magnetic source magnetic circuit structure of a permanent magnet angular vibrating table. Background technique [0002] Angular vibration table is a kind of angular motion (angular displacement, angular velocity, angular acceleration) generating equipment. It is widely used in the calibration of angular vibration sensors and the simulation of angular vibration environments. It is of great significance to the development of national defense, aviation, aerospace and other fields. The standard angular vibration table is mainly used to calibrate or calibrate the angular vibration sensor, and it is required to be able to output high-precision, low-distortion angular motion, and the magnetic circuit structure of the angular vibration table plays an important role in improving the performance of the angular vibration table. [0003] In order to realize...

AI Technical Summary

Problems solved by technology

This kind of structure has the complex structure of the excitation system, large volume, and heavy weight; the excitation coil will generate heat, and at the same time, there will be ripple current in the excitation coil, which will affect the stability of the magnetic field; the unilateral magnetic source, the magnetic field in the radial direction is asymmetrical, and the air gap magnetic field uneven

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