DocumentCode
886630
Title
Low-frequency electrostrictive ceramic plate voltage sensor
Author
Mermelstein, M.D. ; Vohra, S.T.
Author_Institution
US Naval Res. Lab., Washington, DC, USA
Volume
28
Issue
20
fYear
1992
Firstpage
1930
Lastpage
1932
Abstract
A stress-driven electrostrictive ceramic is used for the first time to demonstrate a DC and low frequency voltage sensor. The device uses a Ba:PZT ceramic plate as the sensor element and exhibits a sensitivity of 0.68 mV/V and a minimum detectable voltage of 1.4 mV/ square root (Hz) below 10 Hz. A susceptibility for the coupled polarisation and strain modes is developed and used to quantitatively characterise the sensor operation. Design parameters are suggested for improving the device performance by several orders of magnitude.
Keywords
electric sensing devices; electrostriction; piezoelectric transducers; voltage measurement; 10 Hz; DC sensor; PZT:Ba; PbZrO3TiO3:Ba; coupled polarisation; electrostrictive ceramic plate; low frequency; strain modes; stress-driven ceramic; voltage sensor;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19921235
Filename
161261
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