铜-压电陶瓷复合型驱动器的制备及特性  

Manufacture and Properties of the Brass-piezoelectric Ceramic Composite Actuator

作　　者：沈星[1] 袁慎芳[1] 王鑫伟[1] 陈勇[1] 

机构地区：[1]南京航空航天大学智能材料与结构航空科技重点实验室,江苏南京210016

出　　处：《华南理工大学学报（自然科学版）》2004年第4期11-14,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (10 30 2 0 10 );江苏省自然科学基金重点项目 (BK2 0 0 12 13)

摘　　要：将开有空腔的黄铜片与压电陶瓷通过导电胶粘合并固化获得了一种具有大位移量和一定负载能力的铜 -压电陶瓷复合型驱动器 ,实验得到的压电常数d33超过 2 0 0 0pC/N .本文系统分析了该驱动器的压电性能和位移特性 ;讨论了驱动器几何尺寸对驱动性能的影响 .结果表明 :位于金属顶盖和压电陶瓷之间的空腔可以将压电陶瓷片的径向位移转换成整个结构的轴向位移并将之放大 ;随着铜片厚度的降低 ,驱动器的谐振频率明显下降 。A brass-piezoelectric ceramic composite actuator with a large displacement and a good load-bearing capability was manufactured by agglutinating and solidifying the cavity brass and the ceramic with conductive glue. The piezoelectric coefficient of d 33 more than 2 000 pC/N was obtained in experiments. The piezoelectric and displacement properties of the actuator were systematically analyzed and the relationship between the geometric parameters and the actuating properties of the actuator was discussed. The results show that the cavity positioned between the metal end caps and the ceramic can convert and amplify the radial displacement of piezoelectric ceramics into a larger axial displacement of the whole structure, and that with the decrease of brass thickness, the resonant frequency of the actuator decreases obviously, while the axial displacement increases obviously.

关 键 词：驱动器 压电陶瓷 几何尺寸 驱动性能 

分 类 号：TN384[电子电信—物理电子学]