Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6956568 | Mechanical Systems and Signal Processing | 2013 | 15 Pages |
Abstract
A novel approach for the compression of mechanical vibration signals is presented in this paper. The method relies on a simple and flexible decomposition into a large number of subbands, implemented by an orthogonal transform. Compression is achieved by a uniform adaptive quantization of each subband. The method is tested on a large number of real vibration signals issued by plane engines. High compression ratios can be achieved, while keeping a good quality of the reconstructed signal. It is also shown that compression has little impact on the detection of some commonly encountered defects of the plane engine.
Related Topics
Physical Sciences and Engineering
Computer Science
Signal Processing
Authors
Marius Oltean, José Picheral, Elisabeth Lahalle, Hani Hamdan, Julien Griffaton,