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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Qingbo He Yongbin Liu Jun Wang Jianjun Wang Chang Gong |
| Copyright Year | 2011 |
| Description | Author affiliation: Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China (Qingbo He; Yongbin Liu; Jun Wang; Jianjun Wang; Chang Gong) |
| Abstract | Time-frequency analysis can reveal intrinsic feature of representing non-stationary signal for machine health diagnosis. This paper proposes a novel time-frequency feature, called time-frequency manifold, by addressing manifold learning on the time-frequency distributions (TFDs). The new feature is produced from an analyzed signal in three steps. First, a high-dimensional phase space is reconstructed as a preparation for manifold analysis. Second, the TFDs are calculated to represent the non-stationary information in the reconstructed space. Third, the manifold learning is conducted on the TFDs to produce the nonlinear manifold structure. The time-frequency manifold combines non-stationary information and nonlinear information, and may thus provide better representation of machine health pattern. The new feature is exactly suited for machine health diagnosis, which is verified by an application to gear fault signature analysis. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 428867 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424479337 |
| ISSN | 10915281 |
| e-ISBN | 9781424479351 |
| DOI | 10.1109/IMTC.2011.5944226 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-05-10 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Manifolds Time frequency analysis Feature extraction Spectrogram Gears Noise Fault diagnosis gear manifold learning time-frequency distribution phase space reconstruction machine health diagnosis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Instrumentation Electrical and Electronic Engineering |
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