Method for monitoring of determined number of revolutions of engine, involves recovering stator frequency of propelling engine, and examining stator frequency and determined rotor frequency for plausibility

摘要

The method involves recovering the stator frequency (f-12) of the propelling engine (2), and examining the stator frequency and the determined rotor frequency (f-r) for plausibility. The switching signal (S-F1,S-F2) is generated as soon as the plausibility is not fulfilled. An independent claim is also included for a device for monitoring of a determined number of revolutions of an engine.