Lorentz force type magnetic bearing capable of realizing double permanent magnet deflection

A technology of Lorentz force magnetism and double permanent magnets, applied in the direction of magnetic bearings, bearings, shafts and bearings, can solve the problem of low dimensional accuracy and roughness, reduce the control accuracy and output torque accuracy of magnetic bearings, and it is difficult to eliminate the edge of the magnetic field Effect and other problems, to achieve the effect of reducing dimensional accuracy and surface accuracy requirements, reducing magnetic field inhomogeneity, and eliminating magnetomotive force inhomogeneity

CN106090010AActive Publication Date: 2016-11-09BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
9 Cites 25 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-11-09

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a Lorentz force type magnetic bearing capable of realizing double permanent magnet deflection. The bearing comprises a rotor system and a stator system, wherein the rotor system mainly comprises an outer mounting sleeve, outer magnetic steel, an outer magnetism isolating ring, an outer upper magnetism conducting ring, an outer lower magnetism conducting ring, an outer lower magnetism conducting ring lock nut, a turntable, an outer assembly lock nut, an inner mounting sleeve, inner magnetic steel, an inner magnetism isolating ring, an inner upper magnetism conducting ring, an inner lower magnetism conducting ring, an inner lower magnetism conducting ring lock nut and an inner assembly lock nut; the stator system mainly comprises a stator framework, an aluminum substrate, a winding and epoxy resin glue. The magnetic steel axial magnetization scheme is adopted, the number of magnetic steel turns is reduced, the gap flux density fluctuation caused by uneven magnetomotive force of the magnetic steel is reduced, the paramagnetic effect is realized by the aid of the magnetism conducting rings, the gap flux density fluctuation caused by assembly of the outer magnetic steel and the inner magnetic steel is further reduced, and high-precision deflection control torque can be realized. Besides, a magnetism conducting material is used as a magnetic pole material, precision machining of a magnetic pole surface is facilitated, and requirements for size precision and surface roughness of the magnetic steel are reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a double permanent magnet deflection Lorentz force magnetic bearing. Background technique

[0002] With the development of aerospace technology, the spacecraft platform has higher and higher requirements for the torque accuracy of the attitude control system, and the momentum wheel supported by traditional mechanical bearings is gradually insufficient. The magnetic levitation flywheel supported by magnetic bearings eliminates the friction and wear of mechanical bearings, does not require lubrication, and can rotate at high speed. Compared with flywheels supported by mechanical bearings, it has the advantages of high precision, micro-vibration and long life, and the torque accuracy can reach 10. -5 Nm level, it is an ideal inertial actuator for spacecraft platforms. The advantage of the magnetic levitation flywheel in terms of speed enables it to work in the reaction s...

Examples

specific Embodiment approach

[0018] The preferred embodiment of the double permanent magnet deflection Lorentz force magnetic bearing of the present invention is:

[0019] It mainly includes the rotor system and the stator system. The rotor system mainly includes: outer mounting sleeve, outer magnetic steel, outer magnetic ring, outer upper magnetic ring, outer lower magnetic ring, outer lower magnetic ring lock nut, turntable, outer components Lock mother, inner mounting sleeve, inner magnetic steel, inner magnetic spacer ring, inner upper magnetic ring, inner lower magnetic ring, inner lower magnetic ring lock mother and inner component lock mother; the stator system mainly includes: stator frame, aluminum Base plate, left winding, right winding, front winding, rear winding and epoxy resin glue; the outer mounting sleeve is located on the outer magnetic steel, outer magnetic ring, outer upper magnetic ring, outer lower magnetic ring and outer lower magnetic ring lock The outer magnetic steel is located ...

specific Embodiment

[0025] Such as figure 1 , 2 As shown, a double permanent magnet deflection 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 magnetic steel 2, an outer magnetic ring 3, Outer upper magnetic ring 4A, outer lower magnetic ring 4B, outer lower magnetic ring lock nut 5, turntable 6, outer assembly lock nut 7, inner installation sleeve 8, inner magnetic steel 9, inner magnetic ring 10, inner upper Magnetic ring 11A, inner lower magnetic ring 11B, inner lower magnetic ring lock nut 12 and inner component lock nut 13; the stator system mainly includes: stator frame 14, aluminum substrate 15, left winding 16A, right winding 16B, front winding 16C, rear winding 16D and epoxy glue 17; outer mounting sleeve 1 is located on outer magnetic steel 2, outer magnetic ring 3, outer upper magnetic ring 4A, outer lower magnetic ring 4B and outer lower magnetic...