基于Matlab/Simulink建立了离心机上垂直振动台系统时域仿真模型，模型包括信号给定、油泵、溢流阀、蓄能器、伺服阀、控制器、液压缸、位移测量等模块。信号给定包括阶跃信号、定频正弦信号、扫频正弦信号。针对大流量动圈伺服阀，按物理规律和常见因素建模，先导级和主级都包括零开口、正开口、负开口，特别考虑了瞬间油液回流情况。扫频信号输入，能方便得到系统全频段频率特性和波形。仿真算例获得了振动位移、速度、加速度响应波形及其它相关的波形，这些波形符合物理规律。建模时考虑了尽可能多的因素，仿真获得了真实的波形特征，可为振动台系统设计提供较好参考。

A time domain model based on Matlab/Simulink was built with vertical vibration hydraulic shaker on centrifuge. The model consists of modules including reference signal, oil pump, relief valve, accumulator, servo valve, controller, hydraulic cylinder, and displacement measurement. The reference signal can be step signal, single-frequency sine signal, and swept-frequency sine signal. According to physical laws and common factors, a large flow moving coil servo valve module was built which can be zero lap, over lap, and under lap in pilot stage and main stage, and the inverse flow is considered especially. With swept-frequency sine input, the frequency response and wave pattern in the whole frequency range were obtained. Vibration displacement, velocity, and acceleration waves gained in a simulation example showed that the model was consistent with physical laws. Since factors as many as possible were considered in the modeling, the model gives good characterization of wave and can be used as a reference in shaker design.