ULTRASONIC LINEAR MOTOR USING MULTILAYER PIEZOELECTRIC ACTUATORS

被引:42
作者
FUNAKUBO, T [1 ]
TSUBATA, T [1 ]
TANIGUCHI, Y [1 ]
KUMEI, K [1 ]
FUJIMURA, T [1 ]
ABE, C [1 ]
机构
[1] OLYMPUS OPT CO LTD,DEPT SCI EQUIPMENT,HACHIOJI,TOKYO 192,JAPAN
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 5B期
关键词
ULTRASONIC MOTOR; ULTRASONIC LINEAR MOTOR; ULTRASONIC OSCILLATOR; MULTILAYER PIEZOELECTRIC ACTUATOR;
D O I
10.1143/JJAP.34.2756
中图分类号
O59 [应用物理学];
学科分类号
摘要
In order to lower operating voltage and improve the lifetime of an ultrasonic linear motor, we have developed an ultrasonic oscillator with multilayer piezoelectric actuators. Multilayer piezoelectric actuators are operable at low voltage. However, the tensile strength of the multilayer piezoelectric actuator is small. Therefore, the multilayer piezoelectric actuators are build within an elastic body to lower the tensile stress with a compressive preload. Elliptical oscillations are generated by synthesizing two degenerated modes, a first longitudinal mode and a second flexural mode, with pi/2 phase difference. As a result of estimating the characteristics of the ultrasonic linear motor with the ultrasonic oscillator, the operating voltage of 10 V-p . p, maximum thrust force of 8 N and lifetime of over 5000 hours have been obtained.
引用
收藏
页码:2756 / 2759
页数:4
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