Application of the genetic optimization method to the design of ultrasonic motors

Philippe Bouchilloux, Kenji Uchino

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Ultrasonic motors often use a combination of structural modes to generate the desired elliptical vibration field that ultimately results in the linear or rotary motion of an object. Designing an ultrasonic device that combines structural modes of vibration represents a non-trivial exercise, especially when it is desired to maximize the electromechanical coupling coefficient of the piezoelectric elements, the amplitude of vibration, and the force factor of the device. Other parameters may also be combined and render the exercise even more difficult: targeting a specific frequency, constraining dimensions, electrical constraints, etc. To help designing such ultrasonic structures, we propose to use the genetic optimization method in combination to the finite element method. Although evolutionary methods are not new and have been successfully applied to a variety of problems (including smart devices), they have never been applied, to the best of our knowledge, to the design of ultrasonic motors. In this paper, we review the general aspects of the method utilized, and provide several examples, including experimental verification.

Original languageEnglish (US)
Pages (from-to)547-555
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002
EventSmart Stuctures and Materials 2002: Modeling, Signal Processing and Control - San Diego, CA, United States
Duration: Mar 18 2002Mar 21 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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