Single winding hybrid excitation magnetic lead screw

A hybrid excitation and magnetic screw technology, applied in the direction of permanent magnet clutch/brake, can solve the problems of low utilization rate of excitation winding, low thrust density, complex structure, etc., and achieve simple and compact, high thrust density, simple system structure compact effect
CN107896047AActive Publication Date: 2018-04-10HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2018-04-10

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Abstract

The invention discloses a single winding hybrid excitation magnetic lead screw and belongs to the field of electromechanical transmission. The invention solves the problems of low thrust density, complex structure, and low utilization of an excitation winding of an existing hybrid magnetic circuit magnetic lead screw. The single winding hybrid excitation magnetic lead screw includes a magnetic nutand a magnetic screw, both of which are provided with spiral permanent magnets, and also includes an annular excitation winding. The magnetic nut coaxially sleeves the outside of the magnetic screw and an air gap is left therebetween. The annular excitation winding is fixed on the magnetic nut or the magnetic screw, for adjusting a coupling magnetic field of the air gap so as to adjust the thrustacting on the magnetic nut and the magnetic screw and finally complete the mutual transformation of linear motion and rotary motion. The single winding hybrid excitation magnetic lead screw of the invention is mainly for use on the electromechanical transmission.
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Description

technical field

[0001] The invention relates to a single-winding hybrid excitation magnetic force lead screw, which belongs to the field of electromechanical transmission. Background technique

[0002] The permanent magnet magnetic screw can realize the mutual transformation of linear motion and rotary motion through magnetic field coupling. It has the advantages of high thrust density, high reliability, and overload protection. It has broad applications in the fields of aerospace, marine power generation, and artificial heart. prospect. Both the nut and the screw of the permanent magnet magnetic lead screw use permanent magnets as the excitation source, the air gap magnetic field is difficult to adjust, and the thrust is only related to the relative position between the nut and the screw. When the load changes, the relative position between the nut and the screw will also change, which will cause the speed of the system to fluctuate, which limits the application of the mag...

Claims

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