Composite Flextensional Transducers For Sensing And Actuating

James F. Tressler, Q. C. Xu, Shoko Yoshikawa, Kenji Uchino, Robert E. Newnham

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A ceramic-metal composite flextensional transducer has been developed which integrates both sensing and actuating functions into a single device for the purpose of suppressing low-level vibration noise. This prototype sensor/actuator composite is capable of detecting and completely suppressing in real time small (<lμm) vibration displacements with low (<100gf) forces. The dynamic frequency range of the device spans from 100Hz to at least 2500Hz The actuator portion of the composite consists of a standard (11mm diameter 3mm thick) “moonie” transducer. The sensor is a separate piece of piezoceramic 0.1mm thick imbedded within the surface of the actuator. Vibrations are detected by the sensor; then via a feedback loop the vibration noise is suppressed by the actuator. Potential applications for this device include active optical systems rotor suspension systems and other low-level vibration suppression devices.

Original languageEnglish (US)
Pages (from-to)67-72
Number of pages6
Issue number1
StatePublished - Jun 1994

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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