Abstract: With the deep integration of industry technology and information technology,computer modeling and simulation has been widely used in the development process of systems or products.However,the models have some problems such as disordered,fragmented,unclear in hierarchy,poor in reusability and so on.A method based on system architecture was proposed to develop system hierarchical models .When building the models,the whole system can be divided into multi-level with system level,subsystem level and component level.The interface of each hierarchical model is consistent with the interface defined by the system architecture.It can achieve the continuity of the design and provide effective support for the model-based design.The method can clearly describe the purpose,level and granularity of the model.The typical servo actuation system was used as an example to verify the effectiveness of the method.

Key words: Hierarchical modeling, Servo actuation system, System architecture