Once processing was completed a phase simulation model was performed and phase analysis clearly identified the problem. Despite precision manufacturing of the rotor the slight amount of imbalance was clearly identifiable as was the corresponding phase.
Identifying the dominant root cause via FFT analysis is a very powerful tool made possible with DragonVision Video Deflection Technology. Creating a visualized phase simulation allowed the user to quickly and easily see that the majority of force being applied to the device was originated by the vacuum motor/rotor combination.