New concept for resonant longitudinal-shear ultrasonic motor

P. Bouchilloux, B. Koc, Kenji Uchino

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


This paper presents an original linear piezoelectric motor for applications in space and robotics. The originality of this motor consists in the combination of longitudinal and shear modes of vibration of the stator. These two modes are mixed to produce an elliptical vibration of the surface of the stator in contact with a slider. The motion of the linear slider is obtained through friction forces that develop at the interface between the stator and the slider. This motor is being developed for applications in active truss members of variable geometry structures, such as those used in space. Currently, these structures employ stepper motors. It is expected that replacing these electromagnetic devices with ultrasonic motors will offer the following advantages: position-locking without power supply, compactness, nonmagnetic operation, and lower power consumption. This paper details the design of this motor and emphasizes the novel concept that was developed to combine the longitudinal and shear modes of vibration.

Original languageEnglish (US)
Pages (from-to)71-78
Number of pages8
JournalMaterials Research Society Symposium - Proceedings
StatePublished - Dec 11 2000
EventMaterials for Smart Systems III - Boston, MA, USA
Duration: Nov 30 1999Dec 2 1999

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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