Title :
5E-5 Generated Power Characterization of Piezoelectrics with Electromechanical Coupling Coefficient and Quality Factor
Author :
Cho, J.H. ; Richards, R.F. ; Bahr, D.F. ; Richards, C.D. ; Anderson, M.J.
Author_Institution :
Sch. of Mech. & Mater. Eng., Washington State Univ., Pullman, WA
Abstract :
A simple equation for generated power of piezoelectric devices was developed for the case in which deflection is fixed. The generated power equation is expressed in terms of stiffness, resonant frequency, deflection and electromechanical coupling coefficient k2. The generated power equation shows that power is not a function of quality factor Q under this condition. The power output produced by three piezoelectric cantilevers with a variation in dimensions, k2, natural frequency, and stiffness was measured and compared to the model of the generated power. The model and experiment agreed very well
Keywords :
acoustic devices; cantilevers; elasticity; piezoelectric devices; piezoelectricity; deflection; electromechanical coupling coefficient; piezoelectric cantilevers; piezoelectrics; power characterization; power equation; quality factor; resonant frequency; stiffness; Acceleration; Character generation; Equations; Frequency; Piezoelectric devices; Piezoelectric materials; Piezoelectric transducers; Power generation; Q factor; Vibrations;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.129
