By Topic

An algorithm for identification of lightly damped structural modes

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
P. O. Arambel ; Scientific Syst. Co. Inc., Woburn, MA, USA ; A. M. Sampath ; R. K. Mehra ; T. Parham

An algorithm for the estimation of the natural frequency and the damping factor of lightly damped structural modes is described. The core of the identification process is a subspace-based deterministic-stochastic realization algorithm (DSRA). Identification focuses on one resonant mode at a time; this allows for filtering out the noise and harmonic components present in the data before the identification is carried out. A test to determine the reliability of the estimates is carried out so that particularly noisy records are detected and discarded. The algorithm was applied to simulated data as well as to V-22 tiltrotor aircraft flight test data obtained from Bell Helicopter Textron, Inc. and the results were compared with those obtained using the standard Prony analysis. It was found that both the Prony method and the current algorithm performed well for most data records

Published in:

American Control Conference, 1999. Proceedings of the 1999  (Volume:6 )

Date of Conference: