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ICRA
2005
IEEE

Nonlinear Performance Limits for High Energy Density Piezoelectric Bending Actuators

10 years 3 months ago
Nonlinear Performance Limits for High Energy Density Piezoelectric Bending Actuators
Abstract— To keep pace with recent advances in microrobotic structures demands actuator technologies which can deliver high power and precise motion. For electroactive material based actuators, high power typically implies either high field or high current drives which may lead to greater nonlinearities such as saturation, softening, and increased loss. Physical modeling of actuators is normally taken to be linear since the range of displacements, applied loads, and applied fields is typically small. If extrapolated to high drive conditions, these linear models significantly over predict the power which can be delivered. For actuators driving dynamic systems, a complete nonlinear model of the system will improve controllability and give more accurate estimations of power delivery capabilities. Here static nonlinearities and dynamic linear and nonlinear parameters are derived for high performance piezoelectric bending actuators.
Robert J. Wood, Erik Steltz, Ronald S. Fearing
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where ICRA
Authors Robert J. Wood, Erik Steltz, Ronald S. Fearing
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