中文摘要：

汽车轮心力属于相关性激励,多采用传递路径分析法（MTPA）和虚相干法研究。这两种方法均为计算相关性激励贡献率的方法,目前针对其的对比研究比较少。阐明了两种方法的基本理论,在提出相关性激励能量流动模型的基础上分析比较了二者的物理意义。路面激励识别实验结果表明：MTPA法和虚相干法能够分别从不同方面部分地描述针对车轮心力、整车系统和目标点响应三者的能量流动模型,综合运用二者可以得到汽车轮心力对目标点响应贡献率的较为全面的认识。

英文摘要：

Vehicle＇ s wheel center forces belong to correlated excitations. Multi-reference transfer path analysis （MTPA） and virtual coherence method are the methods to calculate the contribution rates of correlated excitations. However, there are few comparative studies on these two methods. Firstly, the basic theory of these two methods is elucidated, and the physical meaning of the two is analyzed and compared on the basis of proposing the correlated excitation energy flow model. Experiments on identification of road surface excitation were carried out. The results showed that the MTPA method and the virtual coherence method can separately describe the energy flow model for thewheel center forces, the vehicle system and the target point response from different aspects. Using these two methods at the same time can get a more comprehensive understanding of the contribution rates of vehicle wheel center forces to the target point response.