一种用于紧凑离心肾泵的1自由度控制全悬浮混合磁轴承

IF 1.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Chengcheng Xu;Feng Sun;Xiaoyou Zhang;Junjie Jin;Fangchao Xu;Chuan Zhao;Wenxuan Lu;Yanfeng Wang;Zhenhua Ji;Hua Zheng
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引用次数: 0

摘要

在磁悬浮离心血泵中,大多数磁性轴承的转子是扁平的,因此这种磁性轴承不适用于轴向径向尺寸相似的离心肾泵的转子结构。本文将永磁被动悬浮和电磁主动悬浮相结合,提出了一种用于离心肾泵的复合式磁悬浮轴承结构。磁轴承具有体积小、功耗低、结构紧凑等特点。通过主动控制轴向单自由度(1-DOF),实现转子的五自由度(5-DOF)稳定悬浮,旨在取代离心肾泵中的传统滚动轴承。首先,对磁轴承的结构和工作原理进行了论证。其次,采用有限元分析方法对磁性轴承的磁力特性进行了仿真分析,并基于等效磁荷理论和磁路计算理论推导了磁性轴承磁力模型;最后,设计了基于极点配置控制器的磁轴承差动控制系统,制作了磁轴承样机,并通过仿真和实验对其悬浮性能进行了评价。仿真和实验结果表明,该磁轴承系统具有良好的悬浮特性和低功耗特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 1-DOF Controlled Full Levitation Hybrid Magnetic Bearing for Compact Centrifugal Kidney Pumps
In magnetic levitation centrifugal blood pumps, most magnetic bearings have flat rotors, so this kind of magnetic bearings is not suitable for the rotor structure of centrifugal kidney pumps with similar axial-radial dimensions. This article combines permanent magnets (PMs) passive levitation and electromagnetic active levitation to propose a hybrid magnetic levitation bearing structure for centrifugal kidney pumps. The magnetic bearing has the characteristics of small size, low power consumption, and compact structure. It realizes the five-degree-of-freedom (5-DOF) stable levitation of the rotor by actively controlling the axial single degree of freedom (1-DOF), aiming to replace the traditional rolling bearings in centrifugal kidney pumps. First, the structure and working principle of the magnetic bearing are demonstrated. Second, the magnetic force properties of magnetic bearings were simulated and analyzed by the finite element analysis method, and the magnetic bearing magnetic force model was derived based on the equivalent magnetic charge theory and magnetic circuit calculation theory. Finally, the magnetic bearing differential control system based on a pole assignment controller was designed, the magnetic bearing prototype was trial-made, and its levitation performance was evaluated through simulation and experiment. Simulation and experimental results show that the magnetic bearing system has good levitation characteristics and low power consumption characteristics.
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来源期刊
IEEE Transactions on Magnetics
IEEE Transactions on Magnetics 工程技术-工程:电子与电气
CiteScore
4.00
自引率
14.30%
发文量
565
审稿时长
4.1 months
期刊介绍: Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The IEEE Transactions on Magnetics publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
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