Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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The Measurements of Vibration Displacement of the Piezoelectric Exciter Using Mach-Zehnder Optical Fiber Interferometer

Mach-Zehnder 광섬유 간섭계를 이용한 압전형 진동발생기의 동특성 조사

  • 조승일 (부경대학교 물리학과) ;
  • 김성부 (부경대학교 물리학과) ;
  • 이종규 (부경대학교 물리학과) ;
  • 이용봉 (한국표준과학연구원 기반표준부 역학그룹) ;
  • 이두희 (한국표준과학연구원 기반표준부 역학그룹)
  • Published : 2006.10.20
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Abstract

The vibration exciter with the accurate calibration requires a low distortion along a single axis over a wide range of frequency. The fabricated piezoelectric exciter was composed of a base, piezoelectric element(Venitron PZT 5A), electrode and seismic mass. Its performance characteristics is evaluated the Mach-Zehnder optical fiber interferometer. The phase of the optical wave passing through the optical fiber around the piezoelectric element was related the vibrational amplitude with a change of the applied sinusoidal voltage on the piezoelectric element. The dynamic characteristics of vibration exciter can be obtained by measuring the vibrational amplitude with a sinusoidal applied voltage on the piezoelectric element. The sensitivity of the fabricated piezoelectric exciter had a 0.4 nm/V which was uniform up to 20 kHz.

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References

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