METHOD FOR MONITORING A ROTARY ELEMENT BELONGING TO A MECHANICAL TRANSMISSION OF A WIND TURBINE

摘要

The invention relates to a method comprising the steps of: a) determining a signal that is representative of the instantaneous angular velocity of the rotary element over an acquisition period; b) sampling the signal representative of the angular velocity at a constant angular pitch over a predetermined number of samples; c) calculating the discrete Fourier transform of the signal representative of the angular velocity, sampled during step b), so as to obtain an order spectrum of the signal representative of the angular velocity; and d) detecting the fundamental frequency of the occurrence of a defect in the rotary element over the order spectrum of the signal representative of the angular velocity.