Electric rotating machine based on super magnetostriction material

A technology of giant magnetostrictive and giant magnetostrictive rods, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of high driving voltage, low efficiency, Problems such as small deformation of piezoelectric materials achieve the effect of wide operating frequency band, fast response and good stability

Inactive Publication Date: 2013-03-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has outstanding advantages such as high displacement resolution, no noise, small size and fast response, but piezoelectric ultrasonic motors have disadvantages such as small deformation of piezoelectric materials, high driving voltage, and low efficiency.

Method used

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  • Electric rotating machine based on super magnetostriction material
  • Electric rotating machine based on super magnetostriction material
  • Electric rotating machine based on super magnetostriction material

Examples

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] see Figure 1 to Figure 3 , a rotating electrical machine based on giant magnetostrictive materials, including: a preload system, a stator, and two rotors 4, the preload system includes an output shaft 7, two springs 5, and two spring holders, and the spring holder adopts a shaft End retaining ring 6. The rotor 4 is connected to both ends of the stator, and the output shaft 7 penetrates through the center of the stator and the rotor 4 and is respectively socketed and connected with the sta...

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Abstract

The invention provides an electric rotating machine based on super magnetostriction material. The electric rotating machine based on the super magnetostriction material comprises a precompression system, a stator and two rotors, wherein the precompression system comprises an output shaft, two springs and two spring fixing pieces, the two rotors are respectively connected with two ends of the stator, the output shaft penetrates the center of the stator and the centers of the rotors and is connected with the stator and the rotors in a sleeved mode, the springs are respectively sleeved on two ends of the output shaft and press the rotors tightly, and the spring fixing pieces are connected with the output shaft and press the springs tightly. The stator comprises two stator driving ends, a plurality of super magnetostriction units and a plurality of fixing pieces, wherein the super magnetostriction units are evenly arranged between the two stator driving ends, two ends of each super magnetostriction unit are respectively connected with the stator driving ends through the fixing pieces, and the stator drives the rotors to rotate by friction. The electric rotating machine based on the super magnetostriction material has the advantages of being high in accuracy, free of noise, fast in response, big in bearing capacity, big in working bandwidth, good in stability, high in reliability, free of fatigue, free of overheating failure and the like.

Description

technical field [0001] The invention relates to a miniature rotating electrical machine, in particular to a rotating electrical machine based on a giant magnetostrictive material, and belongs to the application field of the magnetostrictive material and the giant magnetostrictive material. Background technique [0002] The so-called magnetostriction is that the size of ferromagnetic substances (magnetic materials) changes in various directions due to changes in the magnetization state. Matter expands when heated and contracts when cooled. In addition to heating, magnetic and electric fields can also cause objects to stretch or shrink in size. Under the action of an external magnetic field, the size of ferromagnetic substances is elongated (or shortened), and after the external magnetic field is removed, it returns to its original length. This phenomenon is called magnetostriction (or effect). The magnetostriction coefficient of giant magnetostrictive materials is much larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/14
Inventor 鹿存跃李冲马艺馨
Owner SHANGHAI JIAO TONG UNIV
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