Electromagnetic force vibration device

The invention belongs to the field of dynamics control experiments and discloses an electromagnetic force vibration device which gives various one-dimensional vibrator experiment tables to provide non-contact low and medium frequency sine exciting force with pretty low errors, thus the dynamic behavior and characteristic of one-dimensional vibrators under the condition with different environmentsand incentive forms are effectively observed. The electromagnetic force vibration device includes a high-voltage Buck circuit, a low-voltage Buck circuit, an analog signal pulse width modulator circuit and an electromagnetic vibration coil, wherein the input end of the high-voltage Buck circuit accesses an alternating current of 220 V, the alternating current is compensated by waves filtering rectifier and power factor, the input end of the low-voltage Buck circuit is connected with the output end of the high-voltage Buck circuit, the input end of the pulse width modulator circuit is connectedwith the output end of the low-voltage Buck circuit, and the output end of the pulse width modulator circuit is connected with the electromagnetic vibration coil. The electromagnetic force vibrationdevice is mainly applied to situation of kinetic control and vibrator experiments.