Mechanical diode based, high-torque piezoelectric rotary motor

George A. Lesieutre, Gary H. Koopmann, Jeremy B. Frank

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A compact high-torque rotary motor was developed for use in large-displacement structural shape control applications. The main principle underlying its operation is rectification and accumulation of small resonant displacements of piezoelectric bimorphs using roller clutches as mechanical diodes. On the driving half of each cycle, the forward motion of the bimorph is converted to rotation of the shaft when the hub torque exceeds that of the load. On the recovery half of each cycle, a second, fixed, roller clutch prevents the load from backdriving the shaft. This approach substantially increased the output mechanical power relative to that of previous inchworm-type motor designs. Experiments to date have demonstrated a stall torque of about 0.6 N-m, a no-load speed of about 720 RPM, and peak power output greater than 5 W. The use of commercial roller clutches, piezoelectric bimorphs, single frequency drive signals also resulted in a simpler, cheaper design.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 2001
Event19th AIAA Applied Aerodynamics Conference 2001 - Anaheim, CA, United States
Duration: Jun 11 2001Jun 14 2001

Other

Other19th AIAA Applied Aerodynamics Conference 2001
CountryUnited States
CityAnaheim, CA
Period6/11/016/14/01

Fingerprint

Clutches
Diodes
Torque
Loads (forces)
Rollers (machine components)
Recovery
Experiments

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Lesieutre, G. A., Koopmann, G. H., & Frank, J. B. (2001). Mechanical diode based, high-torque piezoelectric rotary motor. Paper presented at 19th AIAA Applied Aerodynamics Conference 2001, Anaheim, CA, United States. https://doi.org/10.2514/6.2001-1558
Lesieutre, George A. ; Koopmann, Gary H. ; Frank, Jeremy B. / Mechanical diode based, high-torque piezoelectric rotary motor. Paper presented at 19th AIAA Applied Aerodynamics Conference 2001, Anaheim, CA, United States.
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Lesieutre, GA, Koopmann, GH & Frank, JB 2001, 'Mechanical diode based, high-torque piezoelectric rotary motor' Paper presented at 19th AIAA Applied Aerodynamics Conference 2001, Anaheim, CA, United States, 6/11/01 - 6/14/01, . https://doi.org/10.2514/6.2001-1558

Mechanical diode based, high-torque piezoelectric rotary motor. / Lesieutre, George A.; Koopmann, Gary H.; Frank, Jeremy B.

2001. Paper presented at 19th AIAA Applied Aerodynamics Conference 2001, Anaheim, CA, United States.

Research output: Contribution to conferencePaper

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AB - A compact high-torque rotary motor was developed for use in large-displacement structural shape control applications. The main principle underlying its operation is rectification and accumulation of small resonant displacements of piezoelectric bimorphs using roller clutches as mechanical diodes. On the driving half of each cycle, the forward motion of the bimorph is converted to rotation of the shaft when the hub torque exceeds that of the load. On the recovery half of each cycle, a second, fixed, roller clutch prevents the load from backdriving the shaft. This approach substantially increased the output mechanical power relative to that of previous inchworm-type motor designs. Experiments to date have demonstrated a stall torque of about 0.6 N-m, a no-load speed of about 720 RPM, and peak power output greater than 5 W. The use of commercial roller clutches, piezoelectric bimorphs, single frequency drive signals also resulted in a simpler, cheaper design.

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Lesieutre GA, Koopmann GH, Frank JB. Mechanical diode based, high-torque piezoelectric rotary motor. 2001. Paper presented at 19th AIAA Applied Aerodynamics Conference 2001, Anaheim, CA, United States. https://doi.org/10.2514/6.2001-1558