Preliminary feasibility study of a speed estimator for piezoelectric actuators used in forging processes
TypeCommunications avec actes
In this paper the feasibility of a speed estimator for a piezoelectric actuator used in a forging process is studied. It is based on a simplified linear model and its robustness is tested using a more complex model that include the hysteresis effects. The preliminary results proves that the concept is feasible despite the non-linearities, provided that some parameters of the actuator are known.
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GIRAUD-AUDINE, Christophe; GIRAUD, Frédéric; AMBERG, Michel; LEMAIRE-SEMAIL, Betty (iop publishing, 2015)Stress in a piezoelectric material can be controlled by imposing an electrical field. Thanks to feedback, this electrical field can be a function of some strain-related measurement so as to confer on the piezoelectric ...
NADAL, Clément; GIRAUD-AUDINE, Christophe; GIRAUD, Frédéric; AMBERG, Michel; LEMAIRE-SEMAIL, Betty (IEEE, 2014)This paper deals with an unidimensional analytical modelling of the vibratory behaviour of a rectangular beam excited by several piezoelectric ceramics glued on its lower face. The establishment of the equations of motion ...
GHENNA, Sofiane; GIRAUD, Frédéric; GIRAUD-AUDINE, Christophe; AMBERG, Michel; LEMAIRE-SEMAIL, Betty (IEEE, 2015)This paper presents a method to control ultrasonic waves on a beam, allowing to obtain a Multi-touch ultrasonic tactile stimulation in two points, to give the sensation to two fingers, from two piezoelectric transducers. ...
GHENNA, Sofiane; GIRAUD, Frédéric; GIRAUD-AUDINE, Christophe; AMBERG, Michel; LEMAIRE-SEMAIL, Betty (IEEE, 2015)The control of the vibration amplitude, and the resonance frequency tracking for ultrasonic transducer have been established. However, some applications require to control the vibration amplitude and its relative phase at ...
GIRAUD-AUDINE, Christophe; GIRAUD, Frédéric; AMBERG, Michel; LEMAIRE-SEMAIL, Betty (IEEE, 2014)This paper presents the closed-loop control of exciters to produce a traveling wave in a finite beam. This control is based on a dynamical modeling of the system established in a rotating reference frame. This method allows ...