压电陶瓷基础激励下激振幅度的标定方法

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压电陶瓷基础激励下激振幅度的标定方法

李晖,刘营,王宇,孙伟

东北大学机械设计及理论研究所

收稿日期:2014-04-17 修回日期:2014-06-18 发布日期:2014-09-12
通讯作者: 李晖

A calibration method on base excitation amplitude of piezoelectric ceramic exciter

Received:2014-04-17 Revised:2014-06-18 Published:2014-09-12

摘要/Abstract

摘要： 目前，压电陶瓷正逐步被应用到振动测试领域，作为薄壁构件的高频振动激励设备使用。本文研究了压电陶瓷基础激励下激振幅度的标定方法，来准确获得它的激振幅度大小。首先，提出了一种简便而又可靠的幅度标定方法，并建立了压电陶瓷基础激励下的悬臂梁动力学模型。然后，在明确其标定原理的基础上，采用理论和实验相结合的方式来解决压电陶瓷基础激励下激振幅度的标定问题，并详细叙述了标定的方法及流程；最后，利用该方法对一款PZT陶瓷的基础激振幅度进行了标定，证明了本方法的有效性和实用性。

关键词: 基础激励, 压电陶瓷, 激振幅度, 标定方法

Abstract: Nowadays piezoelectric ceramic exciter (PCE) have been gradually used as an high- frequency vibration excitation equipment of thin-walled structure. This research studied how to accurately obtain base excitation amplitude of PCE by some calibration methods. Firstly, a simple while reliable calibration method was proposed and dynamics model of cantilever beam under base excitation of PCE was establish to clarify calibration principle and simulate calibration process. Next, calibration and test system of base excitation amplitude of PCE was set up and the key steps of this method were explained in details. At last, practicability and effectiveness of above calibration method has been demonstrated by a study case.

Key words: Base excitation, Piezoelectric ceramic exciter, Excitation amplitude, Calibration method

李晖刘营王宇孙伟. 压电陶瓷基础激励下激振幅度的标定方法[J]. .

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