Should We Drive Transducers at Their Resonance Frequency?
H. Shekhani , The Pennsylvania State University, University Park, USA
W. Shi, Harbin Institute of Technology, Harbin, China
M. Majzoubi, M. Choi, A. Bansal, K. Uchino
The Pennsylvania State University, University Park, USA
There are three losses in piezoelectric materials: dielectric, elastic, and piezoelectric, denoted by tanφ’, tanδ’, and tanθ’ for intensive losses, respectively. We discovered that the minimum total loss can be obtained at a frequency between the resonance and antiresonance frequencies, which may be the optimum drive frequency of the transducer to minimize the heat generation. This paper also presents related updated loss information, (1) new methods for characterizing losses in piezoelectrics, (2) loss anisotropy and (3) bias electric field/stress effect on the losses.
ACTUATOR 2016 Manuscript A1.3
Publication date: 01/06/2016
Manuscript A1.3 published in Conference Proceedings ACTUATOR 2016
El vendedor asume toda la responsabilidad de esta entrada.