Abstract
This paper develops an analytical model for an L-shaped piezoelectric motor. The motor structure has been described in detail in Part I of this study. The coupling of the bending vibration mode of the bimorphs results in an elliptical motion at the tip. The emphasis of this paper is on the development of a precise analytical model which can predict the dynamic behavior of the motor based on its geometry. The motor was first modeled mechanically to identify the natural frequencies and mode shapes of the structure. Next, an electromechanical model of the motor was developed to take into account the piezoelectric effect, and dynamics of L-shaped piezoelectric motor were obtained as a function of voltage and frequency. Finally, the analytical model was validated by comparing it to experiment results and the finite element method (FEM).
| Original language | English (US) |
|---|---|
| Article number | 6138732 |
| Pages (from-to) | 108-120 |
| Number of pages | 13 |
| Journal | IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control |
| Volume | 59 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2012 |
| Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received March 19, 2011; accepted July 7, 2011. The authors gratefully acknowledge the financial support from the national Institutes of Health. The authors are with the center for Energy Harvesting Materials and systems (cEHMs), Virginia Tech, Blacksburg, Va (e-mail: spriya@ vt.edu). digital object Identifier 10.1109/TUFFc.2012.2161