| Dynamic Analysis of Micro-machined Diamagnetic Stable Permanent Magnet Levitation System |
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| 作者姓名： | 刘武 陈文元 张卫平 黄晓刚 张忠榕 |
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| 作者单位： | Research Inst.of Micro-Nano Science and Technology Shanghai Jiaotong Univ.，Research Inst.of Micro-Nano Science and Technology，Shanghai Jiaotong Univ.，Research Inst.of Micro-Nano Science and Technology，Shanghai Jiaotong Univ.，Research Inst.of Micro-Nano Science and Technology，Shanghai Jiaotong Univ.，Research Inst.of Micro-Nano Science and Technology，Shanghai Jiaotong Univ.，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China |
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| 基金项目： | 国家自然科学基金;解放军总装备部科研基金 |
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| 摘 要： | A novel micro-machined diamagnetic stable levitation system (MDSLS) which is composed of a free permanent magnetic rotor, a ring lifting permanent magnet and two diamagnetic stabilizers was presented. The static and dynamic stable characters of MDSLS were analyzed. The coupled non-linear differential equations were used to describe six-degree-of-freedom motion of the levitated rotor, and the equivalent surface current and combined diamagnetic image current method were utilized to model the interaction forces and torques between the lifting permanent magnet and rotor permanent magnet and also between the rotor permanent magnet and diamagnetic substrates. Because of difficulty to get analytical solution, the numerical calculation based on Runge-Kutta method was used to solve the dynamic model. The vibration frequencies were identified by fast Fourier transform (FFT) analysis. According to their resonance characteristics and parameters, the translational and angular dynamic stiffness were also calculated. The results show that the levitation of the rotor in MDSLS is stable, and the MDSLS is potential for the application in levitation inertial sensor.
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| 关 键 词： | 抗磁性悬浮 永久磁铁 电控制机械学 动力分析 |
| 文章编号： | 1007-1172（2007）05-0688-07 |
| 修稿时间： | 2006-10-24 |
Dynamic Analysis of Micro-machined Diamagnetic Stable Permanent Magnet Levitation System |
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| LIU Wu,CHEN Wen-yuan,ZHANG Wei-ping,HUANG Xiao-gang,ZHANG Zhong-rong.Dynamic Analysis of Micro-machined Diamagnetic Stable Permanent Magnet Levitation System[J].Journal of Shanghai Jiaotong university,2007,12(5):688-694. |
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| Authors: | LIU Wu CHEN Wen-yuan ZHANG Wei-ping HUANG Xiao-gang ZHANG Zhong-rong |
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| Institution: | Research Inst. of Micro-Nano Science and Technology, Shanghai Jiaotong Univ. , Shanghai 200030, China |
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| Abstract: | A novel micro-machined diamagnetic stable levitation system (MDSLS) which is composed of a free permanent magnetic rotor, a ring lifting permanent magnet and two diamagnetic stabilizers was presented. The static and dynamic stable characters of MDSLS were analyzed. The coupled non-linear differential equations were used to describe six-degree-of-freedom motion of the levitated rotor, and the equivalent surface current and combined diamagnetic image current method were utilized to model the interaction forces and torques between the lifting permanent magnet and rotor permanent magnet and also between the rotor permanent magnet and diamagnetic substrates. Because of difficulty to get analytical solution, the numerical calculation based on Runge-Kutta method was used to solve the dynamic model. The vibration frequencies were identified by fast Fourier transform (FFT) analysis. According to their resonance characteristics and parameters, the translational and angular dynamic stiffness were also calculated. The results show that the levitation of the rotor in MDSLS is stable, and the MDSLS is potential for the application in levitation inertial sensor. |
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| Keywords: | diamagnetic levitation permanent magnet micro-electro-mechanical systems (MEMS) |
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