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本文叙述了电磁振动台的主要部件及在低频振动时动圈架的暂态振动和稳定振动。推导了动圈架低频振动的公式、影响系统的固有频率的参数以及输入阻抗。一、电磁振动台的主要部件及工作原理电磁振动台主要由三个部分组成,如图1所示: (1)不动部分——磁缸和激磁线圈,(2)可动部分——动圈、动圈架和弹簧板, (3)气隙——位于磁缸的极芯和上极板之
This paper describes the main components of the electromagnetic vibrating table and the transient vibration and the steady vibration of the moving frame during low frequency vibration. The formula of low frequency vibration of dynamic bobbin, the parameters affecting the natural frequency of the system and the input impedance are deduced. First, the main components of electromagnetic vibrating table and working principle Electromagnetic vibrating table is mainly composed of three parts, shown in Figure 1: (1) Immobile part - magnetic cylinder and excitation coil, (2) movable part - moving Ring, moving coil holder and spring plate, (3) air gap - located in the magnetic core pole and the upper plate