Title :
Vibrational phase analysis of multipoints on vibrating object using laser-diode displacement meters
Author :
Toyoshima, M. ; Shinohara, S. ; Ikeda, H. ; Yoshida, H. ; Sumi, M.
Author_Institution :
Dept. of Electron. Eng., Shizuoka Univ., Hamamatsu, Japan
fDate :
June 27 1994-July 1 1994
Abstract :
Vibrational displacement waveforms of two points on vibrating body are directly and simultaneously measured using two sets of digital displacement meter, which employs self-mixing laser Doppler velocimeter. Frequency spectrum and phase of the displacement are computer analyzed. This method is useful to construct compact and inexpensive vibration analysis system for multipoints.<>
Keywords :
Doppler effect; digital instrumentation; displacement measurement; laser velocimeters; semiconductor lasers; signal processing equipment; spectral analysis; vibration measurement; digital displacement meter; industrial measurement; laser-diode displacement meters; multipoints; self-mixing laser Doppler velocimeter; vibrating object; vibrational displacement waveforms; vibrational phase analysis; Counting circuits; Diode lasers; Displacement measurement; Frequency; Optical interferometry; Optical scattering; Optical sensors; Performance analysis; Surface emitting lasers; Vibration measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333226
