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The Experimental Measurement and Study on Calculation Method of the Centripetal Force of Magnetic Bearings

Author: FangHuiJuan
Tutor: WangXiaoGuang
School: Wuhan University of Technology
Course: Mechanical and Electronic Engineering
Keywords: The maglev disc system Maglev for Speed Centripetal effect Centripetal force
CLC: TH133.3
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 1
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Abstract


A full maglev rotary support structure, to achieve stable operation of the supporting body, and the need to limit rotated outside the other five degrees of freedom; while in a full maglev the mobile supporting structure, to achieve the stable movement of the body is supported need to limit the other five degrees of freedom in addition to moving outside. However, a lot of equipment forward miniaturization, miniaturization direction of development, the the traditional five degrees of freedom magnetic bearing support structure and control system is more complex, and not conducive applied to the miniaturization of magnetic levitation devices. To the heart of this study magnetic field effects constraints maglev system degrees of freedom, thus simplifying the supporting structure and the control system. First of all, as the research object the maglev the platters system and maglev coaster, respectively, both the experimental determination of the magnetic field to the cardiac effects, on the basis of experimental determination of ANSYS finite element software to calculate the centripetal force of the maglev system, and ANSYS calculation results and experimental measurement result is better matched to the results derived by the two methods: (1) is supported by the body in the offset state, the air gap plane existence of the tangential force, i.e. centripetal; (2) Both methods can be found to be supporting the point of instability at the level of disturbance force, that support level disturbance force limit offset, that can be found in the body to be supporting the anti-level interference force range can be found; (3) To make better use of the magnetic field effects to the heart, in the design of the supporting structure of the magnetic levitation system, the number of the electromagnet, the shape of the arrangement and the armature of the electromagnet are influencing factors. Secondly, the structural design of the two-degree-of-freedom magnetic levitation coaster, the centripetal effect of the magnetic field by constraining the two degrees of freedom to simplify the device to be able to achieve a stable suspension of facts show that the maglev coaster: you can take advantage of the magnetic field constraints centripetal effect maglev system The part of the degrees of freedom, this can reduce the number of the electromagnet, thereby reducing the structure and simplifies the control system, thus indicating: using a magnetic field to the heart effects beneficial to the magnetic bearing is applied to the miniaturization of magnetic levitation device. And calculate the magnetic bearing centripetal force and the body is supported limit offset has two meanings: (1) expand the magnetic bearing applications in miniaturization, miniaturized magnetic levitation devices, (2) optimization of the supporting part of the structure of the magnetic levitation system design to simplify the control system and reduced the magnetic levitation system device.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing
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