Related Experiment Video
Updated: Jun 25, 2026
09:51
A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
Published on: February 20, 2019
Rotary-linear piezoelectric actuator using a single stator
Tomoaki Mashimo1, Shigeki Toyama
1Department of Mechanical System Engineering, Tokyo University of Agriculture and Technology, Koganei-City, Tokyo, Japan. tmashimo@cs.cmu.edu
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 14, 2009
Summary
A novel piezoelectric actuator generates simultaneous rotary and linear motion from a single stator. This rotary and linear piezoelectric actuator (RLPA) utilizes resonant frequencies for efficient energy transfer and actuation.
Area of Science:
- Mechanical Engineering
- Materials Science
- Applied Physics
Background:
- Piezoelectric actuators are crucial for precision motion control.
- Existing designs often require complex mechanisms for combined rotary and linear motion.
Purpose of the Study:
- To introduce a novel single-stator piezoelectric actuator capable of simultaneous rotary and linear motion (RLPA).
- To elucidate the operational principles and validate the design through simulation and prototyping.
Main Methods:
- Fabrication of a single metallic cube stator with a through-hole.
- Application of AC voltages at resonant frequencies to piezoelectric elements.
- Finite Element Methods (FEM) for modal and dynamic analysis.
- Modal analysis to determine vibration modes and natural frequencies.
- Dynamic analysis to confirm elliptical motion generation.
Main Results:
- The RLPA design successfully generated elliptical motions at natural frequencies.
- Modal analysis identified optimal stator shapes and resonant frequencies.
- Dynamic analysis confirmed the generation of elliptical motion for both rotary and linear actuation.
- Prototype RLPA demonstrated successful actuation at resonant frequencies, matching simulation predictions.
- Rotary and linear motion speeds were successfully measured.
Conclusions:
- The developed RLPA effectively achieves combined rotary and linear motion using a single stator.
- The study validates the design principles and simulation methodologies for piezoelectric actuators.
- This innovative actuator design offers potential for advancements in precision motion control systems.
Related Concept Videos
01:24PI Controller: Design
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
01:14Node Analysis for AC Circuits
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
01:26PD Controller: Design
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...