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A cylindrical voice coil motor with multi-layer composite Halbach pole array

A voice coil motor, cylindrical technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of limited increase in output force density, low output force density, magnetic leakage at the edge of the array, etc., to reduce heat generation. Situation, mover mass reduction, effect of coil weight reduction

Active Publication Date: 2019-05-17
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of low output force density, the researchers conducted research from the perspective of innovative magnetic pole arrays
Smith of Newcastle University in the UK designed the voice coil motor stator with a single-layer radial alternating array, but due to the serious flux leakage at the edge of the array, the increase in output force density is relatively limited

Method used

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  • A cylindrical voice coil motor with multi-layer composite Halbach pole array
  • A cylindrical voice coil motor with multi-layer composite Halbach pole array
  • A cylindrical voice coil motor with multi-layer composite Halbach pole array

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain relevant content, rather than to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0027] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] Such as Figure 1-4 As shown, the cylindrical voice coil motor with multilayer compound Halbach magnetic pole array of the present invention includes: an outer layer back iron 1, an outer layer magnet 2, an outer layer coil 3, The middle layer magnet 4, ...

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Abstract

The invention provides a cylindrical voice coil motor with multilayer composite Halbach magnetic pole arrays. The cylindrical voice coil motor comprises an outer back iron layer, an outer magnet layer, an outer coil layer, a middle magnet layer, an inner coil layer, an inner magnet layer and an inner back iron layer sequentially from outside to inside. The outer magnet layer and the inner magnet layer are both in Halbach arrays, corresponding radial magnets of the outer magnet layer and the inner magnet layer are identical in magnetizing direction, and corresponding axial magnets of the outermagnet layer and the inner magnet layer are opposite in magnetizing direction. The middle magnet layer is in a radial magnet array, and a magnetizing direction of radial magnets of the middle magnet layer is identical to that of corresponding radial magnets in the Halbach arrays.

Description

technical field [0001] The invention relates to a voice coil motor, in particular to a cylindrical voice coil motor with a multi-layer composite Halbach magnetic pole array. Background technique [0002] Fatigue test is an important part of cyclically reciprocating force loading on the structure of the aircraft before flight test, effectively evaluating its structural stiffness and predicting its life. Traditional fatigue loading of structural components mostly uses hydraulic servo technology to control hydraulic cylinders for force loading. The technology is relatively mature and is suitable for applications with large loads of kilonewtons. However, with the rapid development of drones and composite materials technology in recent years, more and more structural components use new composite materials to reduce the weight of components, such as fighter radome, drone wings, etc. Due to the limitation of the characteristics of new light and thin materials, the structural fatig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/035H02K1/17H02K3/28
Inventor 姚楠严亮王天乙王少萍
Owner BEIHANG UNIV
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