Design and Experimental Research of Magnetic Bearing Compound Displacement Sensor

被引：0

作者：

Li Z. ^{[1
]}

Su Z. ^{[1
]}

Hu J. ^{[1
]}

Li W. ^{[1
]}

机构：

[1] National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 07期

关键词：

Detection coil; Displacement measurement; Magnetic bearing; Sensor;

D O I：

10.19595/j.cnki.1000-6753.tces.201050

中图分类号：

学科分类号：

摘要：

In order to solve the problems of traditional magnetic bearing displacement sensor with complex structure, poor adaptability, misplacement between detection position and actuator, and poor robustness and practicability of self-sensing method, this paper presents a novel approach for radial displacement detection in magnetic bearing system based on the detection coil. By arranging detection coils around teeth of a magnetic bearing, relative displacement along radial direction between stator and rotor can be achieved. Theory model of the proposed method is built and verified through Simulink simulation. A differential detection scheme is present to improve sensitivity and linearity, and displacement is achieved by detecting the output voltage of the half-bridge detection circuit. Static performance of the proposed method is tested on a platform. And, when the displacement is in the range of -0.3mm to 0.3mm, sensitivity and resolution are 1.2mV/μm and 7μm, respectively, showing the feasibility of displacement detection of the proposed method. The method is simple and robust, and lays a foundation for the realization of compact and reliable magnetic bearing displacement detection. © 2021, Electrical Technology Press Co. Ltd. All right reserved.

引用

页码：1425 / 1433

页数：8

共 21 条

[1] Schweitzer G, Maslen E H., Magnetic bearing: theory, design, and application to rotating machinery, pp. 15-17, (2009)
[2] Zhang Weiyuan, Zhu Huangqiu, Yuan Ye, Study on key technologies and applications of magnetic bearings, Transactions of China Electrotechnical Society, 30, 12, pp. 12-20, (2015)
[3] Jiang Hao, Su Zhenzhong, Wang Dong, Dynamic modeling of magnetic bearing-rotor system on moving platform, Transactions of China Electrotechnical Society, 34, 23, pp. 4880-4889, (2019)
[4] Wang Xiping, Cui Weidong, Research on non-contact displacement sensors for magnetic bearings, Journal of Shanghai University(Natural Science), 1, pp. 3-5, (1998)
[5] (2011)
[6] Yu Yating, Du Pingan, Liao Yaqin, Study on effect of coil shape and geometric parameters on performance of eddy current sensor, Chinese Journal of Scientific Instrument, 28, 6, pp. 1045-1050, (2007)
[7] Pang Xilang, Liu Gang, Wen Tong, Design and experiment study of digital eddy current displacement sensor used for displacement detection of magnetic bearing, Chinese Journal of Sensors and Actuators, 24, 3, pp. 360-364, (2011)
[8] Li Wei, Li Yong, Lu Yongping, A structure separable position sensor used in electromagnetic bearings, Transactions of China Electrotechnical Society, 23, 9, pp. 76-79, (2008)
[9] Siva Srinivasa R, Tiwaria R, Kannababub C., Application of activemgnetic bearings in flexible rotordynamic systems-a state-of the-art review, Mechanical Systems and Signal Processing, 106, pp. 537-572, (2018)
[10] Liu Chengzi, Zhan Jiang, Yang Yan, Et al., Review of research status and development of flexible rotor-magnetic bearing, Proceedings of the CSEE, 40, 14, pp. 4602-4614, (2020)

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