High authority piezoelectric torsional actuators

Chulho Kim, David Lewis, Carl Cm Wu, Alexandre Glazounov, Qiming Zhang

    Research output: Contribution to conferencePaperpeer-review

    6 Scopus citations


    The results on the development of torsional actuators presented here are intended to demonstrate the basis for the utilization of novel, piezoelectric shear response, electromechanical actuators in smart materials and structures. The actuator design developed in this study is a segmented, piezoelectric tube, with the individual segments driven in a shear mode. The assembled tube can be driven to produce precise and significant angular displacement and high torque output directly from this solid state device. Techniques were developed for continuous poling, assembly and testing of actuators. Projected actuator outputs based on the electromechanical test results are discussed relative to the requirements of actual helicopter rotor blade applications, in terms of driving trailing edge flap and direct blade twist actuation.

    Original languageEnglish (US)
    Number of pages4
    StatePublished - Dec 1 1998
    EventProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) - Montreaux, Switz
    Duration: Aug 24 1998Aug 27 1998


    OtherProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI)
    CityMontreaux, Switz

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering


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