宏纤维复合材料致动器机电滞回特性的实验研究

IF 0.8 4区工程技术 Q4 ACOUSTICS

International Journal of Acoustics and Vibration Pub Date : 2017-12-01 DOI:10.20855/IJAV.2017.22.4493

Chen Luqi, Wu Xiaohong, Sun Qing, Xu Xiaomin

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引用次数: 2

摘要

宏纤维复合材料(MFC)作动器的滞回特性与其在振动控制系统中的应用密切相关。本文研究了MFC作动器的机电滞回特性。首先，对MFC作动器在不同电压和频率下的机电特性进行了实验研究，并对其滞回特性进行了研究。实验中采用数字信号处理(DSP)系统控制输入电压，采用数字图像相关(DIC)系统作为非接触装置获得MFC执行器的输出应变。实验结果表明，电压与应变的关系具有非局部记忆的滞后性。其次，采用Preisach模型描述了MFC执行器的滞回特性。为了提高模型的精度，对模型进行了修正，利用准静态频率范围下的实验数据和同余性建立了修正的Preisach模型。最后，将该模型预测的MFC执行器滞回特性与经典Preisach模型预测的滞回特性进行了比较。结果表明，该模型比经典的Preisach模型具有更好的精度，表明本文所研究的MFC作动器滞回模型可用于主动振动控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Experimental study on the electromechanical hysteresis property of macro fiber composite actuator

The hysteresis characteristic in macro fibre composite (MFC) actuator is intimately related to their application in vibration control system. In this paper, the electromechanical hysteresis property of MFC actuator is studied. First, experimental study on the electromechanical behaviours under different voltages and frequencies is carried out, and the hysteretic property of MFC actuator is investigated. A digital signal processing (DSP) system is used to control input voltage and a digital image correlation (DIC) system as noncontact setup is used to obtain the output strain of the MFC actuator in the experiment. The experimental results indicate that the relationship of the voltage and strain displays hysteresis with nonlocal memory. Second, the Preisach model is used to describe hysteresis characteristic of the MFC actuator. In order to improve the accuracy of the model, the modifications are made, in which the experimental data under the quasi-static frequency range and the congruency property are used to establish the modified Preisach model. Finally, the hysteresis characteristics of the MFC actuator predicted from the proposed model are compared with those obtained from the classical Preisach model. The results indicate that the proposed model gives better accuracy than the classical Preisach model, and it is suggested that the present study on the hysteresis model of the MFC actuator can be used in the active vibration control.

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来源期刊

International Journal of Acoustics and Vibration ACOUSTICS-ENGINEERING, MECHANICAL

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

12 months

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