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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Rajagopalan, S. Restrepo, J.A. Aller, J.M. Habetler, T.G. Harley, R.G. |
| Copyright Year | 2005 |
| Description | Author affiliation: Univ. Simon Bolivar, Caracas (Restrepo, J.A.; Aller, J.M.) || Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA (Rajagopalan, S.; Habetler, T.G.; Harley, R.G.) |
| Abstract | Electric motors often operate under operating conditions that are constantly changing with time. Most of such applications demand high reliability from the motor. Early detection of developing motor faults could help provide this needed reliability. While diagnostics of faults in motors operating under steady state conditions is straight forward due to the use of the well known Fourier transformation, diagnostics of motors operating under non-stationary conditions may need more sophisticated signal processing. In this paper, the Wigner-Ville family of time-frequency distributions is presented as an alternative to short time Fourier transforms (STFTs) and wavelets, for the diagnostics of rotor faults in a BLDC motor. Wigner-Ville distributions possess better frequency resolution than the STFT and wavelets. Several variants of the Wigner-Ville distributions are presented. The drawbacks of these distributions and methods to overcome them are also presented. Simulation and experimental results demonstrate that the Wigner-Ville distributions can be a viable tool to analyze rotor faults in BLDC motors operating under continuous non-stationarity. |
| Starting Page | 1 |
| Ending Page | 7 |
| File Size | 5867461 |
| Page Count | 7 |
| File Format | |
| ISBN | 9780780391246 |
| DOI | 10.1109/DEMPED.2005.4662511 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-09-07 |
| Publisher Place | Austria |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Pseudo Wigner-Ville Induction motors Brushless motors Rotors Adaptive filters Stators Time frequency analysis Non-stationary operation Diagnostics, Rotor faults Signal resolution Wigner-Ville BLDC motors |
| Content Type | Text |
| Resource Type | Article |
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