Preliminary feasibility study of a speed estimator for piezoelectric actuators used in forging processes
Communication avec acte
Auteur
GIRAUD, Frédéric 
GIRAUD-AUDINE, ChristopheRésumé
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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Article dans une revue avec comité de lecture; ; ;GIRAUD-AUDINE, Christophe (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 ...
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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (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. ...
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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (IEEE, 2015)
This paper presents a new method to produce and control the vibration amplitude and direction of a travelling wave in a finite beam, using multi-modal approach. A closed loop control of the transducer vibration is applied ...
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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (IEEE, 2017)
The multimodal control of a 2D controlled-Friction Device is presented. We use the Vector control method because the phase and amplitude of two vibration modes at a same frequency can be precisely set. The closed loop ...
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Article dans une revue avec comité de lecture; ; ; ; ;GIRAUD-AUDINE, Christophe (Elsevier, 2014)
When the frequency of the source of vibration of a piezolectric generator is significantly different from its eigenfrequency, the dielectric power losses become prominent and decrease the amount of power which is practically ...