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Order Tracking with Multi-Sine Excitation on a Ground Vibration Test

  • Gordon Hoople
  • Kevin Napolitano
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

This paper presents a new method of postprocessing multi-reference sine sweeps using order tracking methods. In combination with conventional multi-reference signal processing using load cells as independent references, this method of postprocessing can be used to extract the equivalent of multi-reference, symmetric sine, and antisymmetric sine sweeps from a single data set. By capturing all of this information in a single run, as opposed to up to seven runs that might be required on a typical six-shaker test, testing time can be dramatically reduced. With this method, a complete set of mode shapes can be more easily extracted from a single data set with a consistent input force level. This provides consistent results for use in model correlation.

Keywords

Frequency Response Function Test Article Frequency Response Function Horizontal Stabilizer Beating Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Hoople, G. and Napolitano, N., “Implementation of Multi-Sine Sweep Excitation on a Large-Scale Aircraft.” IMAC XXVIII, Jacksonville, Florida, Feb. 2010.Google Scholar
  2. 2.
    Napolitano, K and Linehan, D., “Multiple Sine Sweep Excitation for Ground Vibration Tests,” IMAC XXVII, Orlando, Florida, Feb. 2009.Google Scholar
  3. 3.
    Gade, H., Herlufsen, H., Konstantin-Hansen, H., and Vold, H., ”Characteristics of the Vold-Kalman Order Tracking Filter.” Brüel&Kjær Technical Review No. 1 – 1999.Google Scholar
  4. 4.
    Shih, C.Y. and Brown, D.L., “The Complex Mode Indicator Function Approach to Modal Analysis,” Pre-IMAC 8 Symposium, UC-Irvine, 1989.Google Scholar

Copyright information

© Springer Science+Businees Media, LLC 2011

Authors and Affiliations

  • Gordon Hoople
    • 1
  • Kevin Napolitano
    • 1
  1. 1.ATA Engineering, Inc.San DiegoUSA

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