... distributions and thus identify the type of looseness fault at machinery. electric machines fault diagnosis Hilbert transforms machine bearings rotors vibrations HHT EEMD looseness fault diagnosis vibration analysis marginal Hilbert spectrum Because of long-term running or improper...

... possible to improve fault diagnosis accuracy to reduce downtime of machineries. fault diagnosis genetic algorithm integration diagnosis rotating machinery artificial immune systems condition monitoring electric machines fault diagnosis genetic algorithms neural nets reliability...

.... 03 12 2004 19 09 2006 vibrations electric machines time-frequency analysis fast Fourier transforms wavelet transforms splines (mathematics) Signals consisting of stationary components plus transients are encountered very often in practice. A typical example is the vibration...

... 2005 vibration isolation vibration control elasticity rotors electric machines vibration absorber natural frequency rotor eccentric rotor shaft bending mechanical looseness nonprismatic beam impedance The dynamic vibration absorber is an effective device to reduce...

..., the excessive bearing stress over the incipient plastic flow limit, and the high thermal growths. 12 12 2004 09 09 2005 life testing ball bearings rotation electric machines damping flywheels mechanical contact Although active magnetic bearings (AMBs) provide...

... 05 2005 electric machines nonlinear dynamical systems chaos vibrations rotors mechanical stability machine bearings state-space methods Poincare mapping fast Fourier transforms Lyapunov methods condition monitoring Elwell R. C. , and Findlay J. A. , 1969...

...; final revision, April 13, 2004. Associate Editor: R. Parker. 20 April 2003 13 April 2004 03 05 2005 vibrations structural acoustics rotors stators electric machines finite element analysis machine bearings Rotating machines appear everywhere in our daily life...

... 2004 rotors stators vibrations structural acoustics mechanical contact nonlinear systems electric machines wear Rotor-to-stator rubbing can degrade the performance of rotating machinery through the induction of high amplitude shaft vibration and severe seal/blade wear. It may...

... of malfunctions in gas turbines and compressors and characterizing of the transient behavior of rotating machinery in the run-up stage. 05 02 2004 30 11 2004 machine testing maintenance engineering vibrations electric machines fast Fourier transforms harmonic analysis Large rotating...

... flow electric machines rotors mechanical stability The micro-bearings of the MIT micro-devices were originally designed as hydrodynamic journal bearings. A detailed discussion and analysis of hydrodynamic journal bearings is given in ( 1 ) and in ( 2 ). The simulation results show that high...

... AND ACOUSTICS . Manuscript received July 2000; revised January 2001. Associate Editor: M. I. Friswell. 01 July 2000 01 January 2001 cepstral analysis condition monitoring acoustic signal processing vibrations electric machines In today’s power industries, vibration signal...