Author(s)

S.-W. Ricky Lee, M.-L. Zhu & H.L. Wong

Abstract

Modeling for prototyping of rotary piezoelectric motors S.-W. Ricky Lee, M.-L. Zhu & H.L. Wong Department of Mechanical Engineering, Hong Kong University of Science & Technology, Hong Kong Abstract A new type of ultrasonic rotary motor driven by an anisotropic piezoelectric composite laminate is introduced in this paper. The driving element of the motor is a three-layer laminated plate. A piezoelectric layer is sandwiched between two anti-symmetric composite laminae. Due to the material anisotropy and the anti-symmetric configuration, torsional vibration can be induced through the in-plane strain actuated by the piezoelectric layer. In the present study, an analytical model is formulated. The motor is considered to be a coupled dynamic system that includes the longitudinal and torsional vibrations of the laminate and the rotating motion of the rotor under the action of contact force. The developed model is able to predict the characteristics of the motor. For numerical

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