板式电涡流阻尼器的阻尼特性分析  

Analysis of Damping Characteristics of a Planar Eddy Current Damper

作　　者：刘洋[1] 高跃飞[1] 王登 LIU Yang;GAO Yue-fei;WANG Deng(School of Mechatronics Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2020年第3期209-213,共5页Journal of North University of China(Natural Science Edition)

摘　　要：为了在复杂应用场景下实现对模型阻尼力的分析求解,需充分了解电涡流阻尼器的阻尼特性.以一单阵列板式电涡流阻尼器为计算模型,推导了阻尼系数的数学模型,通过三维磁场有限元分析法分析了各设计参数对阻尼系数的影响情况.结果表明:板式电涡流阻尼器电涡流耗能密度大、可控性高;在一定范围内,增加磁体及导体厚度、降低气隙高度、适当选取磁体间距均可以显著提高电涡流阻尼器的阻尼特性;对于单阵列板式电涡流阻尼器而言,在控制方向交替布置多块永磁体阻尼效果更好.In order to analyze and solve the damping force of the model in complex application scenarios,the damping characteristics of the eddy current damper should be fully understood.Taking a single array planar eddy current damper as the calculation model,a mathematical model of damping coefficient was derived and the influence of design parameters on the damping coefficient was analyzed by the finite element method of three dimensional magnetic field.The results show that the planar eddy current damper has high energy dissipation density and high controllability.In a certain range,the damping characteristics of the eddy current damper can be significantly improved by increasing the thickness of the magnet and conductor,reducing the height of the air gap and properly selecting the distance between the magnets.For a single array planar eddy current damper,the damping effect is better when multiple permanent magnets are arranged alternately in the control direction.

关 键 词：涡流阻尼 电磁感应 参数分析 阻尼特性 

分 类 号：TJ306[兵器科学与技术—火炮、自动武器与弹药工程]