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Design Method of Lorentz Force Deflection Magnetic Bearing

A design method and magnetic bearing technology, applied in the directions of magnetic bearings, bearings, shafts and bearings, can solve the problems affecting the deflection stiffness and torque accuracy of magnetic bearings, and achieve the effect of improving design accuracy, improving design efficiency and saving design time.

Active Publication Date: 2022-06-17
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (2) The shape and size of the permanent magnet structure determine the distribution of the magnetic field lines of the magnetic circuit, as well as the size and uniformity of the air gap magnetic density, which in turn affects the deflection stiffness and torque accuracy of the magnetic bearing

Method used

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  • Design Method of Lorentz Force Deflection Magnetic Bearing
  • Design Method of Lorentz Force Deflection Magnetic Bearing
  • Design Method of Lorentz Force Deflection Magnetic Bearing

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specific Embodiment approach

[0022] The preferred specific embodiment of the Lorentz force deflection magnetic bearing design method of the present invention is:

[0023] This method is based on the comprehensive performance of the deflection stiffness and disturbance torque of the Lorentz force deflection magnetic bearing. The finite element software ANSYS is used to establish the parameterized model of the static magnetic field of the magnetic bearing, the parameterized model of the dynamic eddy current effect of the permanent magnetic field at the rated speed, and the parameterized model of the dynamic eddy current effect of the permanent magnetic field at the rated speed. A parametric model of the interaction between permanent magnetic flux and electromagnetic flux, and the three parametric models are imported into the multidisciplinary optimization software iSIGHT, the value ranges of design variables and constraint variables are set, and the optimization algorithm is used to calculate the search direc...

specific Embodiment

[0067] The design object of the present invention is the Lorentz force deflection magnetic bearing, figure 1 is the X-direction sectional view of the Lorentz force deflection magnetic bearing targeted by the present invention, figure 2 is a Y-direction sectional view of the Lorentz force deflection magnetic bearing targeted by the present invention, image 3 It is a schematic diagram of the structural design parameters of the Lorentz force deflection magnetic bearing targeted by the present invention. figure 1 1 is the outer mounting sleeve, 2 is the outer main magnet, 3 is the outer auxiliary magnet, 4A is the outer upper paramagnetic ring, 4B is the outer lower paramagnetic ring, 5A is the outer upper retaining ring, and 5B is the outer lower retaining ring , 6 is the outer retaining ring lock nut, 7 is the turntable, 8 is the outer assembly lock nut, 9 is the inner installation sleeve, 10 is the inner main magnet, 11 is the inner auxiliary magnet, 12A is the inner upper p...

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Abstract

The invention discloses a design method of a Lorentz force deflection magnetic bearing. The method takes large deflection stiffness and small disturbance moment as the starting point, and takes air gap magnetic density, air gap magnetic density variation, coil slot fullness rate, copper loss , eddy current loss and magnetic flux loss as constraint conditions for structural design, compared with the existing separate optimization method based on the structural parameters of magnetic bearings, it is more conducive to the optimization of the depth of permanent magnets, making the performance of Lorentz force magnetic suspension bearings more reasonable , has the advantages of large air-gap flux density and good air-gap flux density uniformity, and its design idea can be used in the design of various Lorentz force magnetic bearings.

Description

technical field [0001] The present invention relates to a magnetic suspension bearing, in particular to a design method of a magnetic suspension bearing with Lorentz force deflection for inertial actuators such as a magnetic suspension flywheel, a magnetic suspension control torque gyro and the like. Background technique [0002] Magnetic bearing eliminates the friction and wear of mechanical bearings, has no direct contact, no friction, long life, and has the functions of active vibration control and vibration suppression. It is an ideal support method for spacecraft inertial actuators. According to the different ways of generating magnetic force, magnetic bearing can be divided into magnetic resistance bearing and Lorentz force magnetic bearing. The suspension force generated by the Lorentz force magnetic bearing has a linear relationship with the control current, and the control precision is high, which can achieve higher precision suspension support. [0003] The levita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17F16C32/04
CPCF16C32/0408F16C32/044G06F30/17G06F30/23
Inventor 刘强姚舒晏席军吴波王伟盛沙
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY