Comparison of Acoustic Noise and Vibration in Ball-Bearing-Supported Motors and One-Axis Actively Positioned Single-Drive Bearingless Motor with Two Radial Permanent-Magnet Passive Magnetic Bearings
Comparison of Acoustic Noise and Vibration in Ball-Bearing-Supported Motors and One-Axis Actively Positioned Single-Drive Bearingless Motor with Two Radial Permanent-Magnet Passive Magnetic Bearings
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球轴承支撑电机与带两个径向永磁被动磁力轴承的一轴主动定位单驱动无轴承电机的声学噪声和振动比较
DOI：
10.1109/ojia.2022.3232116
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发表时间：
2022
影响因子：
--
通讯作者：
and Akira Chiba
中科院分区：
文献类型：
--
作者：
Theeraphong Srichiangsa;Surya Narayana Gunda;Hiroya Sugimoto;Yusuke Fujii;Kyohei Kiyota;Junichi Asama;and Akira Chiba
本研究通过实验研究了一种单自由度主动定位单驱动无轴承电机的噪声、振动和功率消耗，该电机采用径向被动磁轴承(RPMB)，并与相同定子部件和转子轴的径向机械球轴承进行了比较。在实验中，设置了三个测试电机：(A)带有两个RPMB的无轴承电机，(B)带有两个不带轴向预紧力的滚珠轴承的电机，以及(C)带有两个带轴向预紧力的滚珠轴承的电机。测试中的电机(A)具有单轴主动定位，径向运动由圆柱形永久磁铁制成的RPMB支撑。相反，在电机(B)和(C)中，径向和轴向运动由滚珠轴承支撑，没有产生主动轴向力。实验结果表明，电机(A)的声学噪声、定子振动和输入功率消耗明显低于电机(B)和(C)。在分析部分，分别对带RPMB的无轴承电机和带滚珠轴承的电机的动力学模型进行了设计和仿真。研究发现，RPMB的低径向刚度有助于降低声学噪声和振动。因此，本文给出了一个单自由度主动定位无轴承电机的例子，该电机带有RPMB，实现了降低噪声、定子振动和输入功率消耗。
This study experimentally investigates the acoustic noise, vibration, and power consumption in a one-degree-of-freedom actively positioned single-drive bearingless motor, which has radial passive magnetic bearings (RPMBs) and compared to an identical stator part and rotor shaft with radial mechanical ball bearings. For the experiment, three test motors were set up: (a) a bearingless motor with two RPMB, (b) a motor with two ball bearings without an axial preload, and (c) a motor with two ball bearings with an axial preload. Motor (a) under test had one-axis active positioning and the radial movements were supported by RPMB made of cylindrical permanent magnets. Conversely, in motors (b) and (c), the radial and axial movements were supported by ball bearings, and there was no production of active axial force. The experimental results confirmed that the levels of acoustic noise, stator vibration, and input power consumption were significantly lower in motor (a) than those in motors (b) and (c). In the analysis section, dynamic models of the bearingless motor with RPMB and motor with ball bearings were designed and simulated using MATLABSimulink. The low radial stiffness in RPMB was found to contribute to acoustic noise and vibration reductions. Thus, this article presents an example of a one-degree-of-freedom actively positioned bearingless motor with RPMB that realizes reductions of acoustic noise, stator vibration, and input power consumption.