Ultraminiature Piezomechanisms

Abstract

A rotary inchworm-motor using piezoelectric actuators was developed. The motor design has the advantage of a macro and micro stepper motor with high torque and speed. The design is capable of fast angular positioning with micro level accuracy. The rotary motor, as designed, can also be used as a clutch/brake mechanism. Experimental results demonstrating the prototype's performance based on the aforementioned design considerations are presented. Also proposed herein is a novel way to improve the performance of piezoelectric inchworm motor through optimization of the input signals. The optimized waveforms are verified to improve the performance of the motor in both speed and precision without adding hardware or complexity into the motor.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA398357

Entities

People

  • Ephrahim Garcia
  • Khanh Duong

Organizations

  • Vanderbilt University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Brushless Dc Motors
  • Ceramic Materials
  • Computational Science
  • Computer Programming
  • Electrical Engineering
  • Frequency Bands
  • Mathematical Models
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Optimization
  • Piezoelectric Effect
  • Piezoelectric Materials
  • Resonant Frequency
  • Standing Waves
  • Stepper Motors
  • Surface Acoustic Waves

Fields of Study

  • Engineering

Readers

  • Robotics and Automation.