Title :
Electrode design method for optimal efficiency of longitudinal-bending actuators
Author :
Leroy, Edouard ; Lozada, Jose ; Hafez, Mohammed
Author_Institution :
Sensorial & Ambient Interfaces Lab., CEA, Gif-sur-Yvette, France
Abstract :
We present a new method for electrode design in order to improve efficiency of energy conversion in piezoelectric elements used as a longitudinal-bending actuators. An analytical method of electromechanical coupling calculation based on strain analysis of a piezoelectric element is presented. This method allows for simple computation of conversion efficiency of a set of electrodes associated with a given stimulated mode. We propose an optimal electrode pattern in the case of an ultrasonic curved longitudinal-bending actuator.
Keywords :
electrodes; electromechanical actuators; finite element analysis; optimisation; piezoelectric actuators; ultrasonic devices; electrode design method; electromechanical coupling calculation; energy conversion efficiency; frequency response finite element analysis; longitudinal-bending actuator optimal efficiency; optimal electrode pattern; optimization methods; piezoelectric element strain analysis; ultrasonic curved longitudinal-bending actuator; Acoustics; Actuators; Analytical models; Couplings; Electrodes; Optimization; Strain; Ultrasonic; actuator; effective electromechanical coupling; efficiency; longitudinal-bending; resonant;
Conference_Titel :
Ultrasonics Symposium (IUS), 2012 IEEE International
Conference_Location :
Dresden
Print_ISBN :
978-1-4673-4561-3
DOI :
10.1109/ULTSYM.2012.0679
