NDLI: Research on digital control system for three-degree freedom hybrid magnetic bearing with bilateral magnetic pole faces

Content Provider	IEEE Xplore Digital Library
Author	Qinghai Wu Wei Ni Tao Zhang
Copyright Year	2010
Description	Author affiliation: School of Electronic and Electrical Engineering, Huaiyin Institute of Technology, Huaian 223001, China (Qinghai Wu; Wei Ni; Tao Zhang)
Abstract	In the paper, a three-degree freedom hybrid magnetic bearing (HMB) with bilateral magnetic pole faces is proposed, which is driven by a 2-phase AC power inverter in radial directions and a DC amplifier in axial direction respectively. The axial and radial biased magnetic fluxes are provided by a common radial polarized permanent magnet ring, and the axial and radial control magnetic fluxes are provided by the inner and outer two-layer coils, respectively. The configuration and producing magnetic suspension forces of an innovated three-degree freedom bilateral magnetic pole face hybrid magnetic bearing are introduced. The flux path is calculated by using equivalent magnetic circuit, the mathematics models of the radial and axial magnetic suspension forces are deduced. The displacement stiffness and current stiffness are derived by linearizing the mathematics models. The experiment prototype's parameters of this magnetic bearing are given. Based on TMS320F2812 DSP, the digital control system of the three-degree freedom HMB with bilateral magnetic pole faces is built. The performances of digital control system of three-degree freedom HMB with bilateral magnetic pole faces has been test by experiments. The start suspension experiment, stable suspension experiment and the anti-disturbance experiments have been done respectively. The relative experimental waveforms and experiment results are given. The research results have shown that the control performances of the digital control system of the three-degree freedom HMB with bilateral magnetic pole faces are well.
Starting Page	2893
Ending Page	2897
File Size	422319
Page Count	5
File Format	PDF
ISBN	9781424451814
DOI	10.1109/CCDC.2010.5498691
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils DSP2812 Magnetic flux Polarization Operating Principle Experiment Mathematics Inverters Permanent magnets Digital control Digital Control System Power amplifiers Mathematics Model Mathematical model HMB Magnetic levitation
Content Type	Text
Resource Type	Article

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