Development of a self-oscillating ultrasonic micro-motor and its application to a watch

被引：63

作者：

Iino, A ^{[1
]}

Suzuki, K ^{[1
]}

Kasuga, M ^{[1
]}

Suzuki, M ^{[1
]}

Yamanaka, T ^{[1
]}

机构：

[1] Seiko Instruments Inc, Mihama Ku, Chiba 2618507, Japan

来源：

ULTRASONICS | 2000年 / 38卷 / 1-8期

关键词：

micro actuator; self-oscillating circuit; self-oscillating ultrasonic motor; ultrasonic micro-motor; watch mechanism;

D O I：

10.1016/S0041-624X(99)00192-4

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We have developed an ultrasonic micro-motor for use as a micro-actuator in place of an electromagnetic motor. This ultrasonic micro-motor, which can be driven by a single signal and in which the change of the direction of the rotor movement can be made easily by selecting the electrode to apply the driving signal, can easily construct a self-oscillating circuit and simplify the driving circuit. We have also simplified the motor structure, which is easy to miniaturize and mass-produce. We applied a version of this motor with a diameter of 8 mm to a vibration alarm, and one with a diameter of 4.5 mm to a driving source of a calendar mechanism in a watch. This ultrasonic micro-motor is expected to be of use as a new driving source in a broad range of fields. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：54 / 59

页数：6