柔性轴扭振系统实验台及其实验

Research on Flexible Torsional System Design Methods

介绍一种"先建模,再校核,后修正"的思想方法,通过向系统输入不同频率的正弦信号、测量系统的输入信号和输出信号,得到两者的幅值比和相位差,从而得到系统的实际频率响应曲线,并将其与由系统传递函数得到的理论曲线进行比较,进而修正传递函数的参数值,以获得最理想的实际系统理论模型。实验结果表明,不论是设计方案、机电设计部分还是相关软件的应用上,都达到了预期的效果,对柔性轴扭振系统的优化设计具有参考意义。

This article proposed an integrated approach of model building,model checking and model modifying. When the inputs are sinusoical signals, the frequency response of the system can be obtained by measuring the input and output to get the magnitude ratio and phase difference. And then a comparison was made with the predicted frequency response which can be calculated from the transfer function so that the model of the system can be improved and thus can be used to predict system behavior. The research results show that the design plan, mechtronical design parts and the application of assistant software achieve desired effect. It can be served as a good reference for the optimum design of the flexible torsional system.