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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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (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 ...
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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 ...
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Article dans une revue avec comité de lecture; ; ; ;GIRAUD-AUDINE, Christophe (Elsevier, 2019)
In the field of tactile feedback, researchers try to generate localized stimulations on screens. Some solutions such as time reversal or phased array use vibration induced in the screen equipped with piezoelectric ceramics. ...
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Article dans une revue avec comité de lecture; ; ; ; ;GIRAUD-AUDINE, Christophe; CLENET, Stephane (Institute of Electrical and Electronics Engineers (IEEE), 2021)
When a finger touches an ultrasonic vibrating plate, a non sinusoidal contact force is produced. This force is denominated acoustical finger force. In this paper, a method is proposed, in order to observe its fundamental ...
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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (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 ...