Annulation d'un signal périodique à travers une fonction de transfert périodique
Résumé
We propose an active control method of synchronous machine vibrations. It comes to cancel a periodic signal through a periodically time-varying transfer function. We express the input signal Fourier coefficients, first shown periodic. They converge to stationary values, in spite of the time-varying transfer function. A gradient descent algorithm is next developed, and its results on real vibration signals are investigated.