基于基于MATLAB/Simulink多输入多输出随机振动试验模拟研究拟研究

在建立双电振动台刚体模型与物理参数模型的基础上，结合梁有限元模型并采用控制方法进行了多输入多输出随机振动试验模拟研究。首先采用Virtual.lab软件实现双振动台的多体动力学刚体模型与梁有限元模型的刚柔耦合建模，并在MATLAB/Simulink中建立双振动台电磁作动系统模型。然后，研究并使用矩阵幂次控制算法建立多输入多输出的振动控制系统模型，进行梁试验件的多输入多输出随机振动控制试验的仿真。仿真结果表明，使用此机电耦合的联合仿真方法，可实现包括多输入多输出振动控制、仿真信号的持续输入输出、电磁及振动台机械系统的闭环控制虚拟振动试验。

Simulation study on MIMO random vibration test based on MATLAB/Simulink

Based on the rigid body and parameterized models for double electrodynamic shaker, using a control algorithm the MIMO random vibration simulation with beam finite element model is studied. By using the software Virtual.lab, a coupled rigid flexible model is created with the method of coupling the multi body dynamics rigid model and the beam finite element model. Then the coupled electro mechanical lumped parameter shaker model is established in the MATLAB/Simulink. A vibration controller model is then implemented, based on existing algorithms. At this stage, the MIMO random vibration simulation test is run. Results show that the electromechanical coupling simulation method can properly carry out the closed loop control virtual random vibration test.