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Title: Piezoelectric step-motion actuator

Abstract

A step-motion actuator using piezoelectric material to launch a flight mass which, in turn, actuates a drive pawl to progressively engage and drive a toothed wheel or rod to accomplish stepped motion. Thus, the piezoelectric material converts electrical energy into kinetic energy of the mass, and the drive pawl and toothed wheel or rod convert the kinetic energy of the mass into the desired rotary or linear stepped motion. A compression frame may be secured about the piezoelectric element and adapted to pre-compress the piezoelectric material so as to reduce tensile loads thereon. A return spring may be used to return the mass to its resting position against the compression frame or piezoelectric material following launch. Alternative embodiment are possible, including an alternative first embodiment wherein two masses are launched in substantially different directions, and an alternative second embodiment wherein the mass is eliminated in favor of the piezoelectric material launching itself.

Inventors:
Issue Date:
Research Org.:
Kansas City Plant (KCP), Kansas City, MO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908240
Patent Number(s):
7119478
Application Number:
10/776,968
Assignee:
Honeywell Federal Manufacturing & Technologies, LLC (Kansas City, MO)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02N - ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
DOE Contract Number:  
AC04-01AL66850
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Mentesana, Charles P. Piezoelectric step-motion actuator. United States: N. p., 2006. Web.
Mentesana, Charles P. Piezoelectric step-motion actuator. United States.
Mentesana, Charles P. Tue . "Piezoelectric step-motion actuator". United States. https://www.osti.gov/servlets/purl/908240.
@article{osti_908240,
title = {Piezoelectric step-motion actuator},
author = {Mentesana, Charles P.},
abstractNote = {A step-motion actuator using piezoelectric material to launch a flight mass which, in turn, actuates a drive pawl to progressively engage and drive a toothed wheel or rod to accomplish stepped motion. Thus, the piezoelectric material converts electrical energy into kinetic energy of the mass, and the drive pawl and toothed wheel or rod convert the kinetic energy of the mass into the desired rotary or linear stepped motion. A compression frame may be secured about the piezoelectric element and adapted to pre-compress the piezoelectric material so as to reduce tensile loads thereon. A return spring may be used to return the mass to its resting position against the compression frame or piezoelectric material following launch. Alternative embodiment are possible, including an alternative first embodiment wherein two masses are launched in substantially different directions, and an alternative second embodiment wherein the mass is eliminated in favor of the piezoelectric material launching itself.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {10}
}

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Works referenced in this record:

A linear piezoelectric stepper motor with submicrometer step size and centimeter travel range
journal, September 1990

  • Judy, J. W.; Polla, D. L.; Robbins, W. P.
  • IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 37, Issue 5
  • https://doi.org/10.1109/58.105249