Double-edge type permanent magnetic linear motor

Abstract

The invention discloses a double-edge type permanent magnetic linear motor, which comprises a double-edge long primary stage (1) and a short secondary stage (2) arranged between the two edges of the long primary stage, wherein the long primary stage (1) is of a magnetism conduction body of a tooth groove structure, and consists of a primary iron core and a primary convex electrode (11); the two sides of the log primary stage are of an axial symmetrical structure; a secondary stage tooth (22) is formed in the secondary iron core of the short secondary stage (2); the secondary stage groove usesa semi-closed opening structure; a three-phase armature winding (23) and a direct current exciting winding (24) are wound on the secondary tooth (22) at the same time; a notch is formed in the surfaceof each secondary tooth (22); 12 secondary stage modulation electrodes (2) are formed; the number of pole-pairs of the three-phase armature winding (23) is 2; a Halbach array permanent magnet (26) isembedded in the middle position of a secondary stage iron core yoke part (25); the number of pole-pairs is 10. The double-edge type permanent magnetic linear motor has the advantages that the arrangement of the permanent magnet and the winding on the long primary stage is avoided; the cost is reduced; the thrust fluctuation is reduced.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a double-sided permanent magnet vernier linear motor. Background technique [0002] With the development of modern science and technology, electromagnetic launch, as a new launch technology, has received extensive attention in artillery launch, aircraft boost and spacecraft boost systems. The difference between electromagnetic emission and traditional emission lies in its energy utilization form. Traditional launches mostly use chemical energy, while electromagnetic launches mainly use linear motors to convert electrical energy into electromagnetic energy and then into kinetic energy to complete the acceleration of objects. It has the advantages of small mass and volume, high thrust density, high control precision and high efficiency. [0003] High thrust and stability have always been the main research directions of motors in various application fields, especially in electromagnetic eject...

AI Technical Summary

Problems solved by technology

The shortcomings of this motor are: the long primary and short secondary structure is adopted, and the permanent magnets and windings are arranged in the long primary, so the cost is high; at the same time, due to the special structure of the long primary flux switching permanent magnet linear motor, there are thrust fluctuations that cannot be completely eliminated question

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