本文利用多点随机激励试验技术提出了一种振动模态参数识别的新方法,即组合频率响应函数法,给出了理论模型和计算公式,并通过工程算例进行了验证。本方法可有效地用于大型复杂结构的振动模态试验分析。方法简单,精度较高,并能解析分离具有一定程度的密集模态。 In this paper, a new method of vibration mode parameter identification is proposed by using the multi-point random excitation test technique, namely combining the frequency response function method, giving the theoretical model and calculation formula, and verifying by the engineering example. The method can be effectively applied to the vibration mode analysis of large and complex structures. The method is simple, high precision, and can analyze and separate with a certain degree of intensive modality.