Development of a new standing wave type ultrasonic linear motor

Yongrae R. Roh; Jaewha Kwon; Soosun Lee

doi:10.1117/12.474670

15 July 2002 Development of a new standing wave type ultrasonic linear motor

Yongrae R. Roh, Jaewha Kwon, Soosun Lee

Proceedings Volume 4701, Smart Structures and Materials 2002: Smart Structures and Integrated Systems; (2002) https://doi.org/10.1117/12.474670
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

This paper presents a new standing wave type linear motor that can move bi-directionally with identical performance in both the forward and backward directions. The motor consists of a metallic stator and two piezoceramic plates bonded to the stator with the spatial phase difference of a half wavelength. With two electric driving signals either in-phase or out-of-phase for the two piezoceramic plates, the piezoceramic plates excite two ultrasonic standing waves with a certain phase difference. They generate a new standing wave when combined. The operation principle of the motor is verified through finite element analyses. For an experimental illustration of the theoretical and numerical results, a sample motor is fabricated and characterized following the numerical design. The experimental results confirm the validity and practical applicability of the new motor structure.

Citation Download Citation

Yongrae R. Roh, Jaewha Kwon, and Soosun Lee "Development of a new standing wave type ultrasonic linear motor", Proc. SPIE 4701, Smart Structures and Materials 2002: Smart Structures and Integrated Systems, (15 July 2002); https://doi.org/10.1117/12.474670

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