为了解决模态测试设备面向模态参数的校准问题，研究了模态分析与模态叠加理论，根据该理论得到一个闭环模态信号控制算法，由该闭环控制算法构建一个由5台激振器构成的闭环系统，该组激振器模拟模态测试过程中的一组信号，此组信号包含了标准模态参数的信号，最后用该组信号来校准模态测试设备。根据该方法进行了数值模拟和试验测试，结果显示该校准方法是可行的，并且可以脱离具体的模态结构，不同模态信号的模拟也可灵活实现。%In order to solve the problem of modal parameter calibration of modal test system, the modal analysis and modal superposition theory are studied. According to this theory, a closed-loop mode signal control algorithm is proposed. The closed-loop system is composed of 5 ex-citers. According to this method, the numerical simulation and experiment test are carried out. The results show that the calibration method is fea-sible, and can be separated from the concrete modal structure, and the simulation of different modes can be realized.
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