[1]吴秋平,韩丰田.基于半球支承的静电悬浮方法[J].东南大学学报(自然科学版),2005,35(4):553-557.[doi:10.3969/j.issn.1001-0505.2005.04.013]
 Wu Qiuping,Han Fengtian.Electrostatic suspension method based on hemisphere bearing[J].Journal of Southeast University (Natural Science Edition),2005,35(4):553-557.[doi:10.3969/j.issn.1001-0505.2005.04.013]
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基于半球支承的静电悬浮方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第4期
页码:
553-557
栏目:
仪器科学与技术
出版日期:
2005-07-20

文章信息/Info

Title:
Electrostatic suspension method based on hemisphere bearing
作者:
吴秋平 韩丰田
清华大学精密仪器与机械学系, 北京 100084
Author(s):
Wu Qiuping Han Fengtian
Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
关键词:
静电支承 静电平衡 数字控制器 球形转子
Keywords:
electrostatic suspension electrostatic balance digital controller spherical rotor
分类号:
U666.12
DOI:
10.3969/j.issn.1001-0505.2005.04.013
摘要:
提出了一种基于半球静电支承的静电悬浮方法,该方法既可任意调节转子与电极之间的间隙,又便于观测转子的摆动情况,从而实现高精度球形转子的平衡测量.通过计算半球静电支承下球形转子与电极之间的间隙,导出了静电力与间隙的关系.在分析了半球静电支承特性的基础上,将其工作状态分为起支和支承2种状态,并设计了相应的数字控制器,保证系统可靠悬浮.试验结果表明,半球静电支承系统能稳定工作,可以满足高精度球形转子平衡测量的要求.
Abstract:
In order to measure the balance of a spherical rotor with high accuracy, an electrostatic suspension method based on hemisphere bearing is presented. The method can adjust the clearance between the rotor and electrodes arbitrarily and observe the swing of the rotor easily. The clearance between the spherical rotor and electrodes is calculated under hemisphere electrostatic suspension and the relationship between the electrostatic force and the clearance is derived. Then, based on analyzing the characteristics of hemisphere electrostatic suspension, the suspension states are divided into initial levitation and suspension phase. Accordingly, the digital controllers are designed to suspend the rotor reliably. Experimental results show that the hemisphere electrostatic suspension system can maintain steady suspension and satisfy the requirements of balance measurement of the spherical rotor with high accuracy.

参考文献/References:

[1] 周子牛.静电支承下球形转子静平衡测量的研究[D].北京:清华大学精密仪器系,1985.
[2] Martynenko Y G,Medvedev A V.On the theory of a noncontact gyroscope with an unbalanced spherical rotor [J].Mechanics of Solids,1985,20(4):1-9.
[3] Lötters J C,Olthuis W,Veltink P H,et al.A sensitive differential capacitance to voltage converter for sensor applications [J].IEEE Transactions on Instrumentation and Measurement,1999,48(1):89-96.
[4] Han F T,Gao Z Y,Wang Y L.A differential capacitance to voltage converter for electrostatic levitation applications [J].Sensors and Actuators A,2002,99(3):249-255.
[5] 韩丰田,高钟毓,赵绍君.金属球纳米级微位移测量电路的分析[J].仪表技术与传感器,2001(8):24-27.
  Han Fengtian,Gao Zhongyu,Zhao Shaojun.Analysis of micro-displacement measuring circuit for metal sphere with nanometer resolution [J].Instrument Technique and Sensor,2001(8):24-27.(in Chinese)
[6] 刘延柱.静电陀螺仪动力学[M].北京:国防工业出版社,1978.90-101.
[7] Michael L E.Authority-on-demand adaptive suspension control for the Gravity Probe B gyroscopes [D].USA:Department of Aeronautics and Astronautics,Stanford University,2000.
[8] Niino T,Eto K,Higuchi T.Basic study for electrostatic levitation system in high-vacuum condition [A].In:Speck C E,ed.Industry Applications Conference [C].Piscataway:IEEE,2000.682-686.

备注/Memo

备注/Memo:
基金项目: 国防“十五”重点预研资助项目(413090201).
作者简介: 吴秋平(1972—),男,助理研究员,wuqiuping@mail.tsinghua.edu.cn.
更新日期/Last Update: 2005-07-20