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本文研究了具有电磁约束阻尼层(EMCLD)梁的振动主动控制,电磁约束阻尼层是由电磁层、永磁层和粘弹性阻尼层三部分构成,它利用电磁层和永磁层之间的电磁力作为作动力,对系统的振动进行控制,具有作动方式合理、响应快,耗能低等优点。本文对EMCLD进行建模并计算其电磁力,基于Hamilton原理推导出具有 EMCLD梁的振动控制微分方程,采用速度比例反馈进行振动控制的数值仿真和试验,理论分析和试验结果表明电磁约束阻尼层是一种有效的控制结构振动的方法。
In this paper, the active control of vibration with electromagnetic constrained damping layer (EMCLD) beam is studied. The electromagnetic constrained damping layer is composed of three parts: the electromagnetic layer, the permanent magnet layer and the viscoelastic damping layer. It uses the electromagnetic As a driving force, the system vibration control, with a reasonable mode of operation, fast response, low energy consumption and other advantages. In this paper, EMCLD is modeled and its electromagnetic force is calculated. Based on Hamilton principle, the vibration control differential equation with EMCLD beam is deduced. The numerical simulation and experiment of vibration control with speed proportional feedback are carried out. The theoretical analysis and experimental results show that the electromagnetic constrained damping layer is An Effective Method to Control Structural Vibration.