A survey of noncontacting vibration pickups using electric fields

THE growing importance of vibration requirements in the field of component testing has created an increasing need for means of measuring the magnitude of the vibrating forces and displacements to which components are subjected. In general, quantities should be measured; acceleration, velocity, and displacement. While it is always advantageous to measure directly the quantity to be known, it is quite easy to convert data from one quantity to the other when the frequency and wave form are known.