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Micro gyro based on composite magnetic suspension bearing

A magnetic suspension bearing and suspension bearing technology, which is applied in the field of microsystems, can solve the problems such as the inability to precisely control the degree of freedom of the rotating shaft, the large torque fluctuation in the asynchronous rotation mode, and the difficulty in realizing high-speed rotation, so as to compensate for the uneven quality of the rotor and reduce the control complexity, and the effect of improving accuracy

Inactive Publication Date: 2008-04-30
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this structure, the degree of freedom of the rotor's rotating shaft in the radial direction cannot be precisely controlled, and its asynchronous rotation mode has large torque fluctuations, making it difficult to achieve high-speed rotation

Method used

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  • Micro gyro based on composite magnetic suspension bearing
  • Micro gyro based on composite magnetic suspension bearing
  • Micro gyro based on composite magnetic suspension bearing

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Embodiment Construction

[0013] Such as figure 1 , figure 2 As shown, the present invention includes: upper limit spherical surface 1, upper jewel ball 2, rotating shaft 3, upper passive suspension bearing inner ring 4, upper passive suspension bearing outer ring 5, upper stator base 6, upper stator planar coil 7, rotor upper magnetic Steel 8, rotor base 9, rotor lower magnetic steel 10, lower stator planar coil 11, lower stator base 12, lower passive suspension bearing outer ring 13, lower passive suspension bearing inner ring 14, lower jewel ball 15 and lower limiting spherical surface 16.

[0014] The present invention adopts single rotor and upper and lower stator structure, rotor upper magnetic steel 8, rotor lower magnetic steel 10, rotor base 9 constitute the rotor of micro-gyroscope; upper and lower stator planar coils 7, 11, upper and lower stator bases 6, 12 form the upper and lower stators of the micro-gyroscope. The upper rotor magnetic steel 8 and the lower rotor magnetic steel 10 are ...

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Abstract

It is a composite magnetic suspension axis gyroscope in the micro system field which adopts single rotor and upper and down stator structure, wherein, the rotor is formed by rotor upper magnetic steel, rotor down magnetic steel and rotor base; the upper and down stators are formed by upper and down stators base. The passive suspension axis inner ring is fixed on the outer cycle of the rotation axis and its outer ring is fixed on the inner side of the limited spherical surface; the gem balls are fixed on both sides of the rotation axis and contacts with the limited spherical surface; the limited spherical surface is fixed with the stator.

Description

technical field [0001] The invention relates to a tiny gyroscope, in particular to a tiny gyroscope based on a composite magnetic suspension bearing, which is used in the field of microsystems. Background technique [0002] Magnetic suspension bearings can be divided into active bearings and passive bearings, also known as electromagnetic suspension bearings and permanent magnetic suspension bearings. At present, gyroscopes based on magnetic suspension bearings generally take advantage of their advantages of no mechanical contact, micro friction, no wear, long life, high speed, and no need for lubrication, and electromagnetic suspension bearings have active control capabilities, which can effectively suppress the unbalanced vibration of the shaft. These applications use it to replace traditional bearings to achieve the gyroscopic effect. In addition, there is still research on magnetically suspended rotor gyroscopes, which mainly use electromagnetic effects to achieve the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/24F16C32/04H02K17/16H02N15/00
Inventor 李振波陈佳品
Owner SHANGHAI JIAOTONG UNIV