efrf_mmif


Purpose

Create enhanced FRF and extract shapes using enhanced mmif shape extraction.

Syntax

[fe,sm] = efrf_mmif(f,MIF,TAM,freqlist,mifnumber)

Description

MMIF_eFRF  Generates Enhanced FRF for a given frequency and MIFNUMBER using results from MMIF function

 

[FE,SM]=EFRF_MMIF(F,MIF,TAM,FREQLIST,MIFNUMBER) returns an imat_fn containing the enhanced FRF. It also returns the real shape associated with that enhanced FRF. The shape is calculated as the operating deflected shape (ODS) that results from applying mode enhancement to the original FRFs

 

Inputs:

      F = imat_fn containing FRF

    MIF = Force patterns from MMIF extraction to be applied to F

    TAM = Must contain TAM.aset, may also contain TAM.mass (default TAM.mass = eye(length(TAM.aset))

    FREQLIST = m x 1 list of frequencies for which shapes will be extracted

    MIFNUMBER = m x 1 column vector specifying which force pattern to use for the each given frequency

   Outputs:

    FE - Enhanced FRF

    SM - Enhanced MMIF shape.

 

Examples

>> MIF=mmif(f,TAM)
>> freqlist=[1.25;23.34;76.26];
>> mifnumber=ones(size(freqlist));
>> [eFRF,sm]=efrf_mmif(f,MIF,TAM,freqlist,mifnumber)

See Also

mode_enhancement, spatial_filter, efrf_fit, efrf_cmif