Gearboxfailureisoneofthehighestriskeventsinwindturbines.Inmostofthewind
turbines, planetarygearboxesarepreferredoverconventionalgearboxesduetotheir
significant advantages.Butconditionmonitoringofplanetarygearboxespresentahuge
challenge tothevibrationanalystsduetocomplexdesignandconstructionofitsunit,
vibration transducertypeandlocations,widefrequencyrangeofthevibrations,resolution
requiredtoseparatefrequenciesanddynamicrangerequiredtoobservebothlow
frequencyandhighfrequencycomponentsinthespectrum.