基于压电阻抗技术的阻尼液黏度监测方法  

Method of Monitoring Damping Fluid Viscosity Based on Piezoelectric Impedance Technology

作　　者：霍林生[1] 陈胜斌 李荣荣 胡军[2] HUO Linsheng;CHEN Shengbin;LI Rongrong;HU Jun(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology,Dalian 116024,China;School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051,China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]辽宁科技大学土木工程学院,辽宁鞍山114051

出　　处：《压电与声光》2021年第6期805-808,813,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(52178274);大连市高层次人才创新支持计划基金资助项目(2019RD01)。

摘　　要：针对粘滞阻尼器中阻尼液黏度会发生变化且黏度不易被直接监测的问题,该文提出了一种基于压电阻抗法的阻尼液黏度监测方法,在阻尼器中安装压电传感器,通过测量传感器的机电阻抗值来确定阻尼液的黏度。为验证所提方法的有效性,制作了一个阻尼装置的模型并安装压电传感器,在其中放置不同黏度的阻尼液时测量压电传感器的阻抗值。结果表明,随着阻尼液黏度的增大,阻抗曲线的峰值频率逐渐减小,而实部电阻值逐渐增大。定义的黏度监测指标能够成功反应阻尼液黏度。In view of the problems that the viscosity of the damping fluid in the viscous damper may change and it is difficult to monitor the viscosity currently,we propose a method of monitoring the damping fluid viscosity based on piezoelectrical impedance technology in this paper.A piezoelectric sensor is installed in the damper,and the viscosity of the damping fluid is determined by measuring the electromechanical impedance value of the sensor.In order to verify the effectiveness of this method,we fabricate a model of damping device installed with a piezoelectric sensor.The damping fluids with different viscosities were placed in it,and the impedance of the piezoelectric sensor for each viscosity was measured.The results show that the peak frequency of the impedance curve decreases and the real resistance increases with the increase of the viscosity of the damping fluid.The defined viscosity monitoring index can successfully reflect the viscosity of damping fluid.

关 键 词：粘滞阻尼器 压电陶瓷传感器 机电阻抗 阻尼液 黏度监测 

分 类 号：TN384[电子电信—物理电子学]