用双通道分析仪计算多输入系统的传递函数

A Transfer Function Analysis of Random Multiple-Input Excitation Using A Dual Channel Dynamic Analyzer

本文提出了伪传递函数的新概念及其计算公式。应用该函数可以简单地利用双通道动态分析仪,扩展为能计算多输入多输出系统的传递函数,从而进行实验模态分析。对该方法还进行了实际应用,得到了机床的模态参数。

In this paper a new concept for pseudo-transfer function and its calculating formulae are presented. From the function the dual channel dynamic analyzer which is only used for single-point excitation can be simply extended to solving random multiple-input excitation. The modal paramenters of a machine have obtained by using of this method.