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A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
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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
PubMed
Summary
This summary is machine-generated.

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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.

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  • 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.