| 摘要 |
The invention pertains to a method of detecting the variations of speed (R) of a rotor characterized by the fact that it consists, in real time, in: measuring signals representative of the march-past of the teeth of a phonic wheel or of an equivalent means secured to the rotor for a determined duration (T), sampling, digitizing and storing the measurements performed to obtain an initial digital vector (B), extracting from the initial vector (B) a detection signal around a known disturbing frequency (F), comparing the detection signal with a predetermined threshold (SO) and delivering an alert message in the event of overshoot. The invention also pertains to a system for detecting such variations.
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