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Proceedings Paper

Influence of electromechanical loading on mechanical characterization of piezoelectric stack actuator
Author(s): Kai Zheng; Shaoze Yan; Shizhu Wen
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Paper Abstract

The response of piezoelectric stack actuator under electric, mechanical, and electro-mechanical loading was investigated. Some parameters were evaluated, including output displacement, hysteresis, output force and mechanical stiffness as a function of mechanical preload and electric field value representative of in-service conditions, to understand the behavior of piezoelectric stack actuator under the combined electro-mechanical loading, and to determine the design-oriented fundamental information. Initially, the output displacement is enhanced with the increase in mechanical preload and the maximum displacement values are obtained when the stacks are preload between 6 - 8 MPa. The hysteresis degree under certain preload has better performance. Stiffness measurements indicate strong dependence on mechanical preload and applied voltage, and the values change significantly depending on the operating conditions. The output force results showed that the external mechanical compress did not have significant influence.

Paper Details

Date Published: 2 September 2003
PDF: 4 pages
Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); doi: 10.1117/12.522322
Show Author Affiliations
Kai Zheng, Tsinghua Univ. (China)
Shaoze Yan, Tsinghua Univ. (China)
Shizhu Wen, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 5253:
Fifth International Symposium on Instrumentation and Control Technology
Guangjun Zhang; Huijie Zhao; Zhongyu Wang, Editor(s)

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