Vibration Reduction of Rotor Supported by Superconducting Magnetic Bearing Utilizing Electromagnetic Shunt Damper
Vibration Reduction of Rotor Supported by Superconducting Magnetic Bearing Utilizing Electromagnetic Shunt Damper
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DOI：
10.1109/tasc.2016.2524467
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发表时间：
2016-02
影响因子：
1.8
通讯作者：
Masahiko Sasaki;T. Sugiura
中科院分区：
文献类型：
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作者：
Masahiko Sasaki;T. Sugiura
超导磁悬浮轴承可以使转子不受控制地悬浮，有望应用于飞轮储能系统。然而，由于悬浮力具有非线性，转子会表现出亚谐共振和超谐共振等非线性振动。因此，需要抑制转子的非线性振动的振幅。最近，已经研究了一种可以取代动力吸振器的“电磁分流阻尼器”。本研究旨在探讨电磁分流阻尼器是否能抑制超导磁轴承转子的非线性振动。我们通过分析模型得到了系统的控制方程，并对方程进行了无量纲化。进行线性分析，我们证实，电磁分流阻尼器是有效的线性系统。此外，通过龙格-库塔法进行了数值计算。结果表明，电磁分流阻尼器可以有效地抑制主共振和1/2次亚谐共振的振幅。
A superconducting magnetic bearing can levitate a rotor without control and is expected to be applied to flywheel energy storage systems. However, because the levitation force has nonlinearity, the rotor can show nonlinear vibrations such as subharmonic resonance and superharmonic resonance. Therefore, it is necessary to suppress the amplitude of nonlinear vibration of the rotor. Recently, an “electromagnetic shunt damper,” which can replace a dynamic vibration absorber, has been researched. The purpose of this study is to investigate whether an electromagnetic shunt damper can suppress the nonlinear vibration of a rotor supported by a superconducting magnetic bearing. We obtained the system's governing equations via an analytical model and nondimensionalized the equations. Linear analysis was performed, and we confirmed that an electromagnetic shunt damper is effective against linear systems. Furthermore, numerical calculations via the Rung-Kutta method were carried out. The obtained results show that an electromagnetic shunt damper can suppress the vibration amplitude of primary resonance and subharmonic resonance of order 1/2.