"IEEE Standard on Piezoelectricity (ANSI/IEEE Std. 176-1987) presented a linear model of analyzing piezoelectric disk vibrating in its radial mode. This model is very accurate in predicting resonant frequency and impedance of a disk driven under low field. However, it didn’t include the losses which are practically inevitable. This may result in two effects: 1. The impedances calculated near the resonant and anti-resonant frequencies are inaccurate; 2. The diaplacement amplitude tends to be much higher than what it actually is. Besides, this model can’t analyze disks with partially-covered electrodes. This paper presents a new linear model for the analysis of a piezoelectric disk vibrating in its radial mode. With modal expansion method, the electrical and structural dynamic properties of the disk are analyzed. The viscous damping effect is considered. The effect of partial electrode coverage is also investigated. The effectiveness of the model is experimentally verified.
It is well known that piezoelectric ceramic displays significant nonlinear properties under different operating conditions, including frequency, voltage, temperature, etc. Optimal control and optimal driving of piezoelectric ceramic require understandings of these nonlinear properties. Practically, this is a hard problem, and there are not much literatures on this topic. Our goal was to study the piezoelectric ceramic property under high field. In order to do this, an impedance analysis system was developed to measure impedance of piezoelectric ceramic under high field. It has up to 1.25KW handling capability and 200KHZ bandwidth. The effectiveness of the system is experimentally verified. The departure of the linear model was determined"--Abstract, page iii.
Stutts, Daniel S.
Electrical and Computer Engineering
M.S. in Electrical Engineering
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- An Impedance Analysis System for Measuring High-Field Property of Piezoelectric Ceramics
- Impedance and Dynamic Analysis of a Piezoelectric Circular Disk in Planar Axisymmetric Vibration
ix, 40 pages
© 2002 Qiang Du, All rights reserved.
Thesis - Restricted Access
Vibration -- Research
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Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b4967962~S5
Du, Qiang, "Electromechanical modeling of axisymmetric planar vibration in PZT disks as a function of field strength with experimental verification" (2002). Masters Theses. 2224.
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