Operational characteristics of a same-phase drive-type ultrasonic motor

Takehiro Takano; Yoshiro Tomikawa; Masato Yamanoi; Seiji Hirose; Chiharu Kusakabe

doi:10.1117/12.293552

14 November 1997 Operational characteristics of a same-phase drive-type ultrasonic motor

Takehiro Takano, Yoshiro Tomikawa, Masato Yamanoi, Seiji Hirose, Chiharu Kusakabe

Proceedings Volume 3242, Smart Electronics and MEMS; (1997) https://doi.org/10.1117/12.293552
Event: Far East and Pacific Rim Symposium on Smart Materials, Structures, and MEMS, 1997, Adelaide, Australia

Abstract

We have investigated in detail the ultrasonic motors using two degeneration modes driven by the same-phase input signal, namely, one channel, and some constructions and characteristics of the prototype motors using disk vibrator based on this principle have been reported. However, operational characteristics of the motor were influenced considerably in proportion to the pressing force between the stator and the rotor. In this paper, some considerations on the effect are investigated experimentally. From measurements of the vibration mode in the operational state, it was found that the change of rotational direction of the motor is caused by the shift of the vibration axis of the mode synthesized from two degeneration modes. Revolution characteristics for both rotational directions of the improved motor are shown. The maximum torque and efficiency were about 4.5kgf-cm and 30 percent, respectively.

Citation Download Citation

Takehiro Takano, Yoshiro Tomikawa, Masato Yamanoi, Seiji Hirose, and Chiharu Kusakabe "Operational characteristics of a same-phase drive-type ultrasonic motor", Proc. SPIE 3242, Smart Electronics and MEMS, (14 November 1997); https://doi.org/10.1117/12.293552

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