Electrostatic Force Generation Circuit for Single-side Electrostatic Suspension

摘要：

For the sake of observing the balance state of the spherical rotor,a newly-designed single-side electrostatic suspension system is developed. An electrostatic force generation circuit including an amplitude modulator,a power amplifier,a pair of peak detectors,and a voltage feedback channel is proposed. Furthermore,the output transformer using a nanocrystalline soft magnetic alloy is designed to achieve fast dynamic response,low power consumption,and excellent thermal stability. The experimental results demonstrate the superiority of the electrostatic force generation circuit over classical amplifiers in terms of dynamic response,power consumption,and long-time stability using a carrier frequency of 4.2kHz and the closedloop control scheme.

关键词： electrostatic force electrostatic suspension peak detector nanocrystalline soft magnetic core.

作者: Qiuping Wu Fengtian Han

作者单位: Department of Precision Instruments and Mechanology,Tsinghua University,Beijing,China,100084

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1052-1055

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）