Dynamic Performance of Nonlinear 100X Displacement Amplification Piezoelectric Actuator
Author(s)
Neal, Devin M
Asada, Haruhiko
Date Issued
September 2010
Journal
ASME 2010 Dynamic Systems and Control Conference, Volume 2
Publisher
ASME International
Citation
Neal, Devin, and H. Harry Asada. “Dynamic Performance of Nonlinear 100X Displacement Amplification Piezoelectric Actuator.” ASME 2010 Dynamic Systems and Control Conference, Volume 2, 12-15 September, 2010, Cambridge, Massachusetts, ASME, 2010, pp. 65–72. © 2010 by ASME
Version
Final published version
Abstract
The dynamic frequency response of a nonlinear piezoelectric amplification mechanism capable of over 150 fold displacement amplification is presented. Research to amplify the displacement of piezoelectric actuators has included flexure based approaches that utilize geometric configuration, and has included frequency based approaches that utilize resonance and small steps to contribute to a full motion. The dynamic operation of the actuator presented here utilizes the benefits from both of these methods. The geometry allows for great displacement amplification, and operation within a specific frequency band allows for the exploitation of a nonlinear singularity. The actuator has three distinct modes of dynamic operation, one of which achieves significant displacement by utilizing momentum to pass through a singular configuration. A nonlinear model, linear models for each frequency response mode, and multiple prototypes are presented. This actuator operating in the high displacement frequency band is promising as an input actuator for stepping mechanisms. Copyright © 2010 by ASME.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/DSCC2010-4227
