modal confidence factor MCF


indicator of computational noise modes in time domain parameter estimation methods


  • NOTE 1 The modal confidence factor for mode r is given as where is a computed mode lr is a complex eigenvalue, or system pole for mode r is a mass-normalized mode shape Dt is the time interval.
  • NOTE 2 MCFr » 1indicates a physical mode, and in such case:
  • NOTE 3 MCFr << 1 indicates a computational noise mode.
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