ABSTRACT
This study represents a measurement uncertainty model for rotor vibration amplitude
measuring system. The measuring system is established to provide a simple way for
rotor vibration measurement and consists of a combination of different sensors. A
simple data acquisition software is resolved using LabVIEW. This program enables
displaying and recording the directly measured data. Type-A and type-B uncertainties
are estimated in detail for measuring results. The two different types are combined to
evaluate the deviation of readings resulted from several sources. The overall system
accuracy for rotor vibration amplitude is derived from combining uncertainties of the
two measured perpendicular vibration displacements. An error bar is provided for
each reading to indicate the possible deviation with 95 % level of confidence.
Uncertainty detailed calculation for rotor vibration amplitude measuring system is
computed as a function of the directly measured values.