Investigation of ultrasonic motors using thin piezo-ceramics and a metal composite-plate for watches

被引：17

作者：

Miyazawa, O

Hashimoto, Y

Funasaka, T

Furuhata, M

机构：

[1] Seiko Epson Corp, Shiojiri Plant, Watch Dev & Design Dept, Shiojiri, Nagano 3990796, Japan

[2] Yamagata Univ, Grad Program Human Sensing & Funct Sensor Engn, Yamagata 9928510, Japan

[3] Seiko Epson Corp, Mat Res Ctr, Suwa, Nagano 3928502, Japan

[4] Seiko Epson Corp, Prod Dev Dept, Fujimi, Nagano 3990295, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 9B期

关键词：

piezo-ceramics; ultrasonic motor; longitudinal bar-type ultrasonic motor; thin plate; date wheel; watch;

D O I：

10.1143/JJAP.38.5608

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors have developed a 0.4-mm-thick longitudinal bar-type ultrasonic motor for use in watches, using a thin plate stator and a rotor equipped within the same plane. The stator is driven to vibrate length wise by piezo-ceramics oscillated in the first longitudinal mode. The stator then uses a slant projection tooth to pick at the rotor, and drive it. The motor is simply constructed and is easily driven at low voltages. This paper shows that the ultrasonic motor possesses the requisite size and operating characteristics for use in driving the date wheel of a watch.

引用

页码：5608 / 5611

页数：4