Sine wave cancellation through a periodic transfer function

Pierre Granjon (1) , Christine Serviere (1) , Albert Foggia (2)

1 LIS - Laboratoire des images et des signaux
2 LEG - Laboratoire d'électrotechnique de Grenoble

This paper presents a method of reducing a sinusoidal disturbance through a periodic transfer function. First, a precise definition of the problem (transfer function and disturbance characteristics) is made. A control strategy that minimizes a quadratic cost function is next elaborated. Its good performances are then compared with a classical adaptive feeforward control method thanks to simulation results. It attenuates 90% of the disturbance power in simulation. The finality of this work is to decrease the vibrations of an electrical synchronous machine, and the method reaches a 60% attenuation rate on real signals. Implementation of this algorithm can then be envisaged.

Mots clés: active noise control; linear periodically time-varying system; LPTV system; vibrations; rotating machine

Domaines: Autre

Pierre Granjon, Christine Serviere, Albert Foggia. Sine wave cancellation through a periodic transfer function. 4th IEEE International Workshop on Nonlinear Signal and Image Processing (NSIP 99), 1999, Antalia, Turkey. pp.306-310. ⟨hal-00021290⟩