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Summary: Yang & Allen, IMAC XXIV, Jacksonville, Fl, 2011 Page 1 of 18
Output-Only Modal Analysis Using Continuous-Scan Laser Doppler
Vibrometry and Application to a 20kW Wind Turbine
Shifei Yang
Graduate Research Assistant, Ph.D. Candidate
syang66@wisc.edu
&
Matthew S. Allen,
Assistant Professor
msallen@engr.wisc.edu
Department of Engineering Physics
University of Wisconsin-Madison
535 Engineering Research Building
1500 Engineering Drive
Madison, WI 53706
Abstract:
Continuous-scan laser Doppler vibrometry (CSLDV) is a method whereby one continuously sweeps the
laser measurement point over a structure while measuring, in contrast to the conventional scanning LDV
approach where the laser spot remains stationary while the response is collected at each point. The continuous-
scan approach can greatly accelerate measurements, allowing one to capture spatially detailed mode shapes
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