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characterization of piezoelectric stacks for space applicationsFuture NASA missions are increasingly seeking to actuate mechanisms to precision levels in the nanometer range and below. Co-fired multilayer piezoelectric stacks offer the required actuation precision that is needed for such mechanisms. To obtain performance statistics and determine reliability for extended use, sets of commercial PZT stacks were tested in various AC and DC conditions at both nominal and high temperatures and voltages. In order to study the lifetime performance of these stacks, five actuators were driven sinusoidally for up to ten billion cycles. An automated data acquisition system was developed and implemented to monitor each stack's electrical current and voltage waveforms over the life of the test. As part of the monitoring tests, the displacement, impedance, capacitance and leakage current were measured to assess the operation degradation. This paper presents some of the results of this effort.
Document ID
20110013164
Document Type
Conference Paper
External Source(s)
Authors
Sherrit, Stewart
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jones, Christopher
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Aldrich, Jack
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Blodget, Chad
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bao, Xiaoqi
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Badescu, Mircea
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bar-Cohen, Yoseph
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
March 3, 2008
Subject Category
Electronics and Electrical Engineering
Meeting Information
ASCE American Society of Civil Engineers, Earth and Science 2008(Long Beach, CA)
Distribution Limits
Public
Copyright
Other
Keywords
active mirrors
multilayers
stacks
positioners
piezoelectric devices