Theoretical research on new maglev ultra-low frequency vibration sensor

Xiaomeng Zhao, Tianping Liu, Dezhi Zheng

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

3 Citations (Scopus)

Abstract

Aiming at the disadvantages of the widely used magneto-electric ultra-low frequency (ULF) vibration sensor, a kind of new maglev ULF vibration sensor is designed in this paper, which uses the hybrid-levitation structure with electromagnets and permanent magnets as the supporting element instead of the conventional spring structure. It can adjust the equivalent bearing stiffness coefficient and the equivalent damping coefficient by the closed-loop control system, thus the natural frequency of system can be reduced effectively, meanwhile the low measurement limit can be extended. The paper describes the working principle of maglev ULF vibration sensor in detail from the sensing mechanism, theoretical modeling and simulation analysis. The simulation results show that the velocity sensitivity of maglev ULF vibration sensor is 50 mV· s/mm, the acceleration sensitivity is 300 mV· s /mm and the lower-cut-off frequency is about 0.05 Hz. Thus, the maglev ULF vibration sensor has the advantages of lower-cut-off frequency, high sensitivity, small size and low weight. And this paper provides a new method for the current inertia ultra-low frequency ULF measurement.

Original languageEnglish
Title of host publicationProceedings of 2013 IEEE 11th International Conference on Electronic Measurement and Instruments, ICEMI 2013
Pages134-139
Number of pages6
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 IEEE 11th International Conference on Electronic Measurement and Instruments, ICEMI 2013 - Harbin, China
Duration: 16 Aug 201318 Aug 2013

Publication series

NameProceedings of 2013 IEEE 11th International Conference on Electronic Measurement and Instruments, ICEMI 2013
Volume1

Conference

Conference2013 IEEE 11th International Conference on Electronic Measurement and Instruments, ICEMI 2013
Country/TerritoryChina
CityHarbin
Period16/08/1318/08/13

Keywords

  • closed-loop control system
  • magnetic levitation
  • ultra-low frequency
  • vibration sensor

Fingerprint

Dive into the research topics of 'Theoretical research on new maglev ultra-low frequency vibration sensor'. Together they form a unique fingerprint.

Cite this