Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

A standing wave-type noncontact linear ultrasonic motor.

J Hu1, G Li, H L Chan

  • 1Center for Smart Materials and Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. fjhui@hotmail.com

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|May 31, 2001
PubMed
Summary

A novel noncontact linear ultrasonic motor uses acoustic standing waves to levitate and drive a slider. This study provides guidelines for optimizing slider displacement and speed through stator vibration and slider design.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Impact of sepsis education for healthcare professionals and students on learning and patient outcomes: a systematic review.

The Journal of hospital infection·2022
Same author

Lead zirconate titanate/poly(vinylidene fluoride-trifluoroethylene) 1-3 composites for ultrasonic transducer applications.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Piezoelectric and pyroelectric properties of PZT/P(VDF-TrFE) composites with constituent phases poled in parallel or antiparallel directions.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Negative photoconductivity and memory effects of germanium nanocrystals embedded in HfO2 dielectric.

Journal of nanoscience and nanotechnology·2006
Same author

A simple and convenient route to prepare poly(vinylidene fluoride trifluoroethylene) copolymer nanowires and nanotubes.

Chemical communications (Cambridge, England)·2005
Same author

Ultrasonic transducers using electron-irradiated vinylidene fluoride-trifluoroethylene copolymers.

Ultrasonics·2003

Area of Science:

  • Mechanical Engineering
  • Acoustics
  • Tribology

Background:

  • Noncontact linear ultrasonic motors offer potential for precise motion control.
  • Understanding the driving mechanism of acoustic streaming is crucial for motor performance.

Purpose of the Study:

  • To propose and analyze a novel standing wave-type noncontact linear ultrasonic motor.
  • To develop a theoretical model for the motor's driving force based on acoustic streaming.
  • To establish guidelines for enhancing slider displacement and speed.

Main Methods:

  • Construction of a prototype motor with a wedge-shaped aluminum stator and a multilayer PZT vibrator.
  • Observation of slider levitation and motion.
  • Development of a theoretical model assuming turbulent acoustic streaming as the driving force.

Related Experiment Videos

  • Comparison of theoretical predictions with experimental results.

    • Main Results:

    • The theoretical model showed good agreement with experimental data.
    • Increased stator vibration displacement and decreased stator vibration velocity gradient and slider weight per unit area enhanced slider displacement.
    • Increased stator vibration velocity amplitude and gradient, decreased slider weight per unit area, and driving frequency enhanced slider speed.
    • An optimal slider surface roughness was identified for maximum slider speed.

    Conclusions:

    • The proposed linear ultrasonic motor effectively utilizes acoustic standing waves for noncontact motion.
    • The theoretical model accurately predicts motor performance.
    • Design parameters such as stator vibration characteristics, slider weight, surface roughness, and driving frequency can be optimized to control slider displacement and speed.