34


component, the power spectra of the three components for all three accelerometers are plotted, as shown in Figure 3-12 below.



                                  H100







                         Figur  3Y(o                   t



          Figure 3-11 Two-input single output model for vibration analysis.


FAN


PUMP


TEST SECTION


100   200   300    400
               Frequency (Hz)


500   600   700    800


Figure 3-12 Power spectra of three components for all three accelerometers.


1010 L
  0


10-4 10-4



10-8




10_100


10-2 10-4 10-6




10-8 1010
   0