Systematic error of eddy current sensors with runout or shaft vibration measurements, which may be caused by residual magnetism or electrical irregularities of the measured part.
In a balancing machine, a mechanical drive consisting of a motor, an optional gearbox and a drive shaft. The drive shaft will finally connect to one end of the rotor to be balanced.
The smallest single unbalance which creates the same effect on the n-th flexural principal mode as the real unbalance distribution of a flexible rotor.