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Design method of lorentz force deflection magnetic bearing

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

Active Publication Date: 2018-11-23
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 design method of Lorentz force deflection magnetic bearing of the present invention, its preferred embodiment is:

[0023] Based on the comprehensive performance of Lorentz force deflection magnetic bearing deflection stiffness and disturbance torque, 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 permanent magnetic field at the rated speed. The parameterized model of the interaction between permanent magnetic flux and electromagnetic flux, and import the three parameterized models into the multidisciplinary optimization software iSIGHT, set the value range of design variables and constraint variables, and use the optimization algorithm to calculate the search direction and iteration step size, After multi-step calculation, the maximum def...

specific Embodiment

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

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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 a starting point and takes gap fluxdensity, gap flux density variation, coil slot full rate, copper loss, eddy current loss and magnetic flux action loss as constraints to design a structure. Compared with an existing independent optimization method based on various structural parameters of a magnetic bearing, the method is more beneficial to deep optimization of permanent magnets, the performance of a lorentz force magnetic bearing is more reasonable, the method has the advantages of being large in gap flux density and good in gap flux density uniformity, and the design idea of the method can be used for design of various lorentz force magnetic bearings.

Description

technical field [0001] The invention relates to a magnetic suspension bearing, in particular to a design method of a Lorentz force deflection magnetic bearing for inertial actuators such as a magnetic suspension flywheel and a magnetic suspension control moment gyroscope. Background technique [0002] Magnetic suspension bearings eliminate the friction and wear of mechanical bearings, have no direct contact, no friction, long life, and have the functions of active vibration control and vibration suppression. They are ideal support methods for spacecraft inertial actuators. According to the different ways of magnetic force generation, magnetic suspension bearings can be divided into magnetic resistance bearings and Lorentz force magnetic bearings. The levitation force generated by the Lorentz force magnetic bearing has a linear relationship with the control current, the control precision is high, and a higher precision levitation support can be realized. [0003] The levitat...

Claims

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Application Information

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IPC IPC(8): G06F17/50F16C32/04
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