一种两刚体结构惯性参数和连接特性的识别方法

A Method for Identifying Inertia and Joint Properties of a Two-Rigid-Body Structure

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 technique of identifying inertia and joint properties of a two-rigid-body struc- ture is presented in this paper.By using the modal parameters of the system obtained by modal analysis and proper calculations,all inertia and joint properties of the system can be obtained.The results of computer simulation of a two-rigid-body system with two degrees of freedom of each rigid body show that the method presented in the paper is feasible and effec- tive.