自感知电涡流阻尼器建模与特性研究  

Modeling and characteristics of a self-sensing eddy current damper

作　　者：曹青松[1] 周继惠[1] 李健[1] 刘丹[1] 

机构地区：[1]华东交通大学机电工程学院,南昌330013

出　　处：《振动与冲击》2013年第21期136-141,149,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51265009);江西省自然科学基金(20114BAB206003)

摘　　要：随着国民经济的快速发展,发生在高速旋转机械中的振动有可能会影响或限制系统的正常工作,给生产、生活造成不可估量的损失,机械振动控制已成为近年来的研究热点之一,在工程实践中,通常又采用外加阻尼的方法抑制机械振动。本文研究一种可用于旋转元件振动抑制的自感知电涡流阻尼器,借助双线圈透射式电涡流检测方法设计自感知阻尼器结构,依据电涡流效应及电磁力产生原理分析其工作原理,应用阻抗分析理论及电磁理论分别建立了阻尼器的感知模型及作动模型,实例仿真分析阻尼器的参数特性,探讨振动位移与阻尼器输入和输出间的变化关系。最后,实验验证了理论建模的正确性及阻尼器的自感知功能。With national economy rapid development, mechanical vibration happening in high-speed rotating machines may affect or restrict the normal operation of a system, and cause huge loss of production or people＇s life. Vibration control of machineries becomes a hot topic in recent years. Usually, the damping method is used to suppress mechanical vibration in engineering practice. A kind of self-sensing eddy current damper used to restrain vibrations of rotating components was studied here. Electric eddy current testing method with double-wire transmission type was adopted to design the self-sensing damper structure. Its working principle was analyzed based on the eddy current effect and the electromagnetic theory. The detection model and actuation model of the damper were established using the impedance analysis theory and the electromagnetic theory. The characteristics of the damper were analyzed with an instance simulation, and the mutual influences among vibration displacements and the input and output of the damper were discussed. Finally, the test results showed that the theoretical modeling is correct and the damper has a self-sensing function.

关 键 词：自感知电涡流阻尼器 数学模型 特性研究 实验验证 

分 类 号：TH113.1[机械工程—机械设计及理论]