For the problem of relatively severe lateral vibration found in the vertical electrodynamic shaker experiment, an electromechanical coupling dynamic model of the electrodynamic shaker considering low-frequency lateral vibration is proposed. The reason and mechanism of the lateral vibration is explained and analyzed through this model. To establish this model, an electromagnetic force model of overall conditions is firstly built by fitting force samples with neural network method. The force samples are obtained by orthogonal test of finite element simulation, in which five factors of the moving coil including current, vertical position, flipping eccentricity angle, radial translational eccentric direction and distance are considered. Secondly, a 7-dof dynamic model of the electrodynamic shaker is developed with the consideration of the lateral vibration of the moving system. To obtain the transfer function accurately, the stiffness and damping parameters are identified. Finally, an electromechanical dynamic model is established by coupling the force model and the 7-dof dynamic model, and it is verified by experiments. The coupling model proposed can be further used for the control and optimization of the electrodynamic shaker.

针对立式电动振动台实验中存在较大的横向振动问题，提出了考虑低频侧向振动的电动振动台机电耦合动力学模型。通过该模型解释和分析了横向振动的原因和机理。为了建立该模型，首先通过用神经网络方法拟合力样本来建立整体条件的电磁力模型。通过有限元模拟的正交试验获得力样本，其中考虑了动圈的五个因素，包括电流，垂直位置，翻转偏心角，径向平移偏心方向和距离。其次，考虑到运动系统的横向振动，建立了电动振动筛的7-dof动力学模型。为了准确获得传递函数，需要确定刚度和阻尼参数。最后，通过将力模型与7-dof动力学模型耦合建立机电动力学模型，并通过实验验证。提出的耦合模型可以进一步用于电动振动筛的控制和优化。