Order Tracking Measurements with SKF Microlog Analyzer and SKF @ptitude Analyst

In collecting vibration measurements on a variable speed machine that changes speed during data collection, it is probable that the spectra collected will not be usable. If a normal FFT is taken while speed variation occurs, the peaks in the spectrum will smear out; they will either be smaller and wider or completely disappear.

This is because the frequency of the forcing frequencies changes with the change in speed. Therefore, it will be difficult to find peaks from bearing frequencies in the normal spectrum collected during a speed variation.

When measuring vibrations on a variable speed machine there is a need to constantly follow the speed and adjust the bandwidth of the spectrum relative to the speed of the machine.  This is possible with order tracking using the SKF Microlog Analyzer and SKF @ptitude Analyst.