Design of controllers: Vibration damping of switched reluctance machine by piezoelectric actuators

This paper deals with the vibration reduction of switched reluctance machine (SRM) by the aim of piezoelectric actuators. These actuators are controlled in order to generate a vibratory acceleration of the structure which is opposite to the perturbation one. The studied machine is a 2/4 SRM with two piezoelectric actuators controlled using a low voltage source. The perturbation rejection problem is studied with two kinds of controllers: a Positive Position Feedback regulator, often used in resonant problem, and an Internal Model Control. Simulations and experimental tests in both low and high rotational speeds allow a comparison of these two controllers and exhibit their respective advantages.