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)


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.


Frequency Response Function Test Article Frequency Response Function Horizontal Stabilizer Beating Effect 
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    Hoople, G. and Napolitano, N., “Implementation of Multi-Sine Sweep Excitation on a Large-Scale Aircraft.” IMAC XXVIII, Jacksonville, Florida, Feb. 2010.Google Scholar
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    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
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    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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