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http://dx.doi.org/10.5050/KSNVN.2006.16.10.1044

The Measurements of Vibration Displacement of the Piezoelectric Exciter Using Mach-Zehnder Optical Fiber Interferometer  

Cho, Seung-Il (부경대학교 물리학과)
Kim, Sung-Boo (부경대학교 물리학과)
Lee, Jong-Kyu (부경대학교 물리학과)
Lee, Yong-Bong (한국표준과학연구원 기반표준부 역학그룹)
Lee, Doo-Hee (한국표준과학연구원 기반표준부 역학그룹)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.10, 2006 , pp. 1044-1049 More about this Journal
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.
Keywords
Calibration; Piezoelectric Exciter; Mach-Zehnder Optical Fiber Interferometer;
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