Research on dynamic characteristics of eddy current sensor for magnetic suspended flywheel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aimed at the demand of the high precision displacement measurement in high speed magnetic suspended flywheel (MSRW), the variable frequency and amplitude modulation eddy current sensor is analyzed and the sensor's equivalent transfer function is given. A design method of phase-lead network for eddy current sensor lead compensation is proposed. The test result indicates that the sensor bandwidth can reach 10 kHz after phase compensation in high frequency band and the sensor's phase-lag is decreased markedly, the dynamic performance of the sensor is improved effectively. The MSFW experiment indicates that the sensor can supply precision displacement information of flywheel rotor and the MSFW can work at 40000 rpm stably after compensation.

Original languageEnglish
Title of host publicationSeventh International Symposium on Instrumentation and Control Technology
Subtitle of host publicationOptoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration
DOIs
StatePublished - 2008
Event7th International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration - Beijing, China
Duration: 10 Oct 200813 Oct 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7129
ISSN (Print)0277-786X

Conference

Conference7th International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration
Country/TerritoryChina
CityBeijing
Period10/10/0813/10/08

Keywords

  • Dynamic characteristics
  • Eddy current sensor
  • Flywheel
  • Magnetic bearing
  • Phase-lead network

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