伺服阀用压电型驱动器研究  

A Piezoelectric Actuator for Hydroelfctric Servo-valve

作　　者：高春甫[1] 鄂世举[1] 杨志刚[1] 

机构地区：[1]吉林大学,长春130025

出　　处：《中国机械工程》2005年第16期1431-1434,共4页China Mechanical Engineering

基　　金：国家863高技术研究发展计划资助项目(2001423270)

摘　　要：研制了一种压电驱动的电-机械转换器,用于构造电液伺服阀;介绍了电-机械转换器的工作原理;优选了结构型式及尺寸,并对其动静态特性进行了测试.测试结果表明,所设计的电-机械转换器有较好的静态特性及动态特性.在开环方式反向控制算法下,静态特性中的非线性度小于1.6%,在电压范围为0～70V内的滞环小于2.3%,动态响应频宽达1.0kHz以上.由此可见,所设计的电-机械转换器有望替代现有的电磁力矩马达.This paper developed a new type of electrical-to-mechanical signal conversion device （piezoelectric bimorphs） for a hydroelectric servo-valve , and focused on the design, fabrication and characterization of the conversion device. The principle of the conversion device was discussed. PZT-5H was investigated as piezoelectric layers in the conversion device. Fabricated conversion device was characterized by an laser measurement system in static and dynamic mode. The nonlinearity of the conversion device is less than 1.6% and the hysteresis loop is within 2.3% over the entire working range when using a open-loop controller, and its resonant frequency is higher than 1.0KHz. Thus, it is shown that the conversion device can be promised hydroelectric servo-valve.

关 键 词：电液伺服阀 压电元件 电-机械转换器 动静态特性 

分 类 号：TN384[电子电信—物理电子学]