提出了一种两刚体结构惯性参数和连接特性的识别方法。通过对结构的模态测试分析,获得结构的刚体模态参数,并进行适当的识别计算,最后可得到两个刚体的质量、质心坐标、主轴惯性矩、惯性主轴等惯性参数以及连接刚度和阻尼特性。通过一个各有二自由度两刚体系统的计算机仿真识别,结果表明文中所述识别理论和方法是正确和有效的。 A method to identify the inertial parameters and the connection characteristics of two rigid structures is proposed. Through the modal test and analysis of the structure, the rigid body modal parameters of the structure can be obtained and properly identified and calculated. Finally, the mass, centroid coordinates, moment of inertia of the main shaft, moment of inertia and other inertial parameters of the rigid body can be obtained, and the connection stiffness and damping characteristic. Through a computer simulation of two rigid systems with two degrees of freedom, the results show that the recognition theory and method described in the paper are correct and effective.