| 发明名称 | Method and device for monitoring torsional vibrations of a rotary shaft of a turbine engine | ||
| 摘要 | A method of monitoring twisting vibration of a rotary shaft of a turbine engine includes obtaining a vibratory acceleration signal from a sensor located on a stationary component of the turbine engine. This vibratory signal is characterized by a carrier frequency. The method also includes evaluating a frequency spectrum of the vibratory signal and searching for a pair of spectral lines of amplitudes greater than at least a first threshold. The lines are distributed in the spectrum on either side of the carrier frequency of the vibratory signal, and spaced apart therefrom by a twisting frequency of the shaft. Where appropriate, the method includes issuing a warning message. | ||
| 申请公布号 | US9097575(B2) | 申请公布日期 | 2015.08.04 |
| 申请号 | US201013512765 | 申请日期 | 2010.11.22 |
| 申请人 | SNECMA | 发明人 | Gerez Valerio;Griffaton Julien Christian Pascal;Jadczak Edouard Joseph |
| 分类号 | G08B21/00;G01H1/00 | 主分类号 | G08B21/00 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A method of monitoring twisting vibration of a rotary shaft of a turbine engine, the method comprising: obtaining a vibratory acceleration signal from an accelerometer located on a stationary component of the turbine engine, this vibratory signal being characterized by a carrier frequency; evaluating a frequency spectrum of the vibratory signal; searching for a pair of spectral lines of amplitudes greater than at least a first threshold, the lines being distributed in the spectrum on either side of the carrier frequency of the vibratory signal, and spaced apart therefrom by a twisting frequency of the shaft; and where appropriate, issuing a warning message. | ||
| 地址 | Paris FR | ||