Interpolation Techniques for the Time Domain Averaging of Vibration Data with Application to Helicopter Gearbox Monitoring

摘要: Abstract : Interpolation techniques provide an alternative to the phase-locked frequency multiplier for calculation of time domain average a vibration signal. Higher order interpolation produce flatter passbands and lower sidelobes in stopband but require longer times. Aliasing errors are introduced into result by replication during interpolation. In general, attenuated averaging, under some conditions may be passed without attenuation. Keywords: Gear boxes, Helicopter, Signal Condition monitoring, Australia.