材料科学
超声波电动机
执行机构
定子
陶瓷
压电
超声波传感器
过程(计算)
复合材料
声学
机械工程
电气工程
计算机科学
工程类
物理
操作系统
作者
Xiaopin Hu,Teng Cao,Boquan Wang,Zhiyi Wen,Yan Kang,Dawei Wu
标识
DOI:10.1016/j.ceramint.2022.10.103
摘要
Multilayer piezoelectric ceramics have wide application prospects in the fields of precision driving and intelligent sensing owing to their low driving voltages and large strains. However, high sintering temperatures and expensive noble metal electrodes limit their application as multilayer piezoelectric ceramic actuators (MLAs) in conventional devices. In this study, a modified piezoelectric ceramic powder and Ag inner electrode were used to prepare a low-cost MLA with a low sintering temperature of 900 °C. The MLA showed superior piezoelectric properties with d 33 = 3015 pC/N and a large electric-field-induced strain of 0.13% at 22.2 kV/cm. Moreover, the stator of the ultrasonic motor composed of this MLA produced the ideal vibration mode, and the maximum rotation speed of the ultrasonic motor was 192 r/min under a 50 g load, which verifies the applicability of this component in practical minimised devices. These results demonstrate a strategy for fabricating low-cost and high-precision micro-actuators for precision driving.
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