Low-loss and high-precision radial electromagnetic suspension bearing

An electromagnetic levitation, high-precision technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit static parts, magnetic circuit shape/style/structure, etc. problems such as hidden dangers, to achieve the effect of small heat generation, scientific and reasonable structural design, and good assembly links

Active Publication Date: 2014-02-19
TIANJIN NAVIGATION INSTR RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Designing with ferrite materials is difficult to realize the complex pole-shoe core structure. Higher heat also reduces signal sensitivity

Method used

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  • Low-loss and high-precision radial electromagnetic suspension bearing
  • Low-loss and high-precision radial electromagnetic suspension bearing

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Embodiment Construction

[0019] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0020] A low-loss, high-precision radial electromagnetic suspension bearing, including a rotor core 2, a stator core 1, and an excitation coil 3, the rotor core is fixedly connected to the instrument pivot, and the stator core is fixedly connected to the instrument bracket Together, the rotor core is located radially inside the stator core.

[0021] The innovation of the radial electromagnetic suspension bearing lies in that the stator core is composed of 8 to 20 magnetic poles 5 made of a magnetically permeable ring 4 and its outer periphery, eight magnetic poles in this embodiment. Two adjacent magnetic poles and the coils wound on them form a group of working magnetic poles, the magnetic poles are pole ...

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Abstract

The invention relates to a low-loss and high-precision radial electromagnetic suspension bearing which comprises a rotor core, a stator core and field coils. The rotor core is fixedly connected with an instrument pivot into a whole, the stator core is fixedly connected with an instrument support into a whole, and the rotor core is located on the radial interior of the stator core. The low-loss and high-precision radial electromagnetic suspension bearing is characterized in that the stator core is formed by a magnetism guiding ring and 8-20 magnetic poles manufactured on the periphery of the magnetism guiding ring, a work magnetic pole is formed by every two adjacent magnetic poles and the corresponding field coil arranged on the two adjacent magnetic poles in a wound mode, and the magnetic poles are pole-shoe type magnetic poles. The low-loss and high-precision radial electromagnetic suspension bearing is scientific and reasonable in structural design, fewer in stator core loss, less in generated heat and high in reliability, size accuracy and bearing centering accuracy, and the requirements of instrument pivot centering and the relative fields are met.

Description

technical field [0001] The invention belongs to a non-contact radial electromagnetic suspension bearing, in particular to a radial electromagnetic suspension bearing with low loss, high precision and high reliability for centering an instrument pivot. Background technique [0002] At present, the bearings for instrument pivot centering are mainly mechanical bearings, electric suspension bearings and electromagnetic suspension bearings. Mechanical bearings are contact type, with high friction, low precision, and short service life. Electric suspension bearings have high current, high loss, and high heat generation, which will have adverse effects on the instrument. In contrast, electromagnetic suspension bearings have higher precision and lower loss, and have been widely used. In instrument pivoting and related fields, in order to reduce the heat generation of electromagnetic suspension bearings, there are currently two main methods, one is to use ferrite materials as the ir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/22
Inventor 武丽花赵丙权白永杰王智奇王磊
Owner TIANJIN NAVIGATION INSTR RES INST
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