建立了多级复杂耦合系统动力学模型，基于耦合系统传函特性，建立了子系统耦合界面动态特性在线预测的间接逆子结构方法，结合简单的四级包装系统模型进行了数值仿真和验证。结果表明：所建立方法具有很好的完备性。研究结论为复杂系统动力学特性分析提供了一种新的技术方法。

Multi-level coupled system dynamics models were established. An indirect inverse substructure method was developed for online prediction of dynamic characteristics of subsystem coupled interface based on transfer function characteristics of coupled system. Numerical simulation and verification was carried out combining with simple four levels packaging system model. The results showed that the method established has very good readiness. The purpose was to provide a new technical method for dynamics characteristics analysis of complex system.