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A Double Halbach Array Spherical Lorentz Force Magnetic Bearing

A Lorentz magnetic and array technology, which is applied in the field of double Halbach array spherical Lorentz magnetic bearings, can solve the problems of reducing the deflection torque accuracy of magnetic bearings, low magnetic field strength, and large fluctuations in magnetic density at the splicing of magnetic steel. Achieve the effects of eliminating flux density fluctuations, enhancing air gap magnetic field strength, and improving bearing capacity and support rigidity

Active Publication Date: 2018-08-28
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned Lorentz force magnetic bearings all adopt the traditional magnetic steel splicing structure, the magnetic field strength in the air gap is low, and the flux density fluctuations at the magnetic steel splicing place are relatively large, which reduces the deflection torque accuracy of the magnetic bearing

Method used

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  • A Double Halbach Array Spherical Lorentz Force Magnetic Bearing
  • A Double Halbach Array Spherical Lorentz Force Magnetic Bearing
  • A Double Halbach Array Spherical Lorentz Force Magnetic Bearing

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specific Embodiment approach

[0021] Double Halbach array spherical Lorentz force magnetic bearing of the present invention, its preferred embodiment is:

[0022] It is mainly composed of a rotor system and a stator system. The rotor system mainly includes: outer mounting sleeve, outer Halbach array magnetic steel, outer magnetic ring, outer upper magnetic ring, outer lower magnetic ring and outer component lock nut; the stator system mainly includes : Inner mount, inner Halbach array magnetic steel, inner spacer magnetic ring, inner upper magnetic ring, inner lower magnetic ring, left frame, right frame, left winding, right winding, front winding, rear winding, epoxy resin glue and the lock nut of the inner component; the outer mounting sleeve is located on the radial outside of the outer Halbach array magnet, the outer magnetic ring, the outer upper magnetic ring, the outer lower magnetic ring and the lock nut of the outer component, and the outer Halbach array magnet is located on the outer The center p...

specific Embodiment

[0028] Such as figure 1 , 2 As shown, a double Halbach array spherical Lorentz force magnetic bearing is mainly composed of a rotor system and a stator system. It is characterized in that the rotor system mainly includes: an outer mounting sleeve 1, an outer Halbach array magnetic steel 2, and an outer magnetic ring 3. The outer upper magnetic ring 4A, the outer lower magnetic ring 4B and the outer component lock nut 5; the stator system mainly includes: the inner mounting seat 6, the inner Halbach array magnetic steel 7, the inner magnetic isolation ring 8, and the inner upper magnetic ring 9A, inner and lower magnetic ring 9B, left frame 10A, right frame 10B, left winding 11A, right winding 11B, front winding 11C, rear winding 11D, epoxy resin glue 12 and inner component lock nut 13; the outer mounting sleeve 1 is located The outer Halbach array magnetic steel 2, the outer magnetic spacer ring 3, the outer upper magnetic ring 4A, the outer lower magnetic ring 4B, and the ou...

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Abstract

The invention discloses a spherical magnetic bearing with double Halbach arrays and Lorentz force. The spherical magnetic bearing comprises a rotor system and a stator system. The rotor system mainly comprises an outer mounting sleeve, outer Halbach array magnetic steel, an outer magnetism isolating ring, outer magnetic conductive rings and an outer assembly lock nut; the stator system mainly comprises an inner mounting seat, inner Halbach array magnetic steel, an inner magnetism isolating ring, inner magnetic conductive rings, frameworks, windings, epoxy resin glue and an inner assembly lock nut. The spherical magnetic bearing has the advantages that the spherical magnetic bearing is of a Halbach array magnetic steel structure, accordingly, the intensity of magnetic fields of air gaps can be enhanced, the bearing capacity and the support stiffness of the spherical magnetic bearing can be improved, and deflection torque of the spherical magnetic bearing can be enlarged; magnetic density fluctuation of the magnetic steel due to splicing gaps can be eliminated by the magnetic conductive rings, and accordingly the internal magnetic density uniformity of the air gaps and the precision of the deflection torque of the spherical magnetic bearing can be improved; the surfaces of magnetic poles are spherical surfaces, magnetic lines of force are always perpendicular to the spherical surfaces of the magnetic poles when penetrating the windings, the magnetic density and the direction of winding locations cannot be changed before and after deflection, and accordingly the precision of the deflection torque of the spherical magnetic bearing further can be improved.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a double Halbach array spherical Lorentz force magnetic bearing. Background technique [0002] With the development of aerospace technology, the control accuracy of the attitude control system of the spacecraft platform is getting higher and higher. The traditional mechanical bearing support can no longer meet the needs of the development of space technology due to the disadvantages of friction, complex lubrication system, and large disturbance torque. Magnetic suspension bearings eliminate the friction and wear of mechanical bearings, do not require lubrication, and have the advantages of micro-vibration and active vibration suppression. They are ideal support methods for flywheels. The maglev flywheel has the advantages of high torque accuracy and high control bandwidth, and the torque accuracy can reach 10-5Nm. It is an ideal inertial actuator for high-precision, hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04
CPCF16C32/0429F16C2202/40
Inventor 刘强胡灯亮吴波马丽梅赵勇赵明师高宪鹏
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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