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Time-Domain Dynamic Analysis of Piezoelectric MLA

[+] Author Affiliations
Paolo Righettini, Mauro Forlani, Roberto Strada

University of Bergamo, Dalmine, Italy

Paper No. IMECE2010-38793, pp. 129-135; 7 pages
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 8: Dynamic Systems and Control, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4445-8
  • Copyright © 2010 by ASME


Piezoelectric multilayer actuators (MLAs) are among the most suitable piezoelectric actuators to be integrated into fast mechanical systems, given their high force capabilities and high dynamic response. Overall dynamic behaviour though is influenced by load and driving electric circuit characteristics. The aim of the present work is to investigate the transient dynamics of mechanical systems actuated by MLAs. To this purpose, the system, including the driving electric circuit, is modelled employing finite difference techniques. Such methods are extremely flexible and allow modelling non-linear behaviour and transient phenomena. In particular the response to an input step voltage will be simulated and the influence of the system’s parameters on its response will be investigated. The results provide valuable information such as required currents that can help the engineer in the design process.

Copyright © 2010 by ASME



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