基于模型操作系统的航天器数字孪生体模型定义初探OA北大核心CSTPCD

Under the grand goal of"Digital China",the current development mode of spacecraft in China is upgra-ding from document driven to model driven.Model-based systems engineering(MBSE)is the core method guiding this development mode upgrading.One of the core contents of MBSE is the construction and operation of digital twin model.Spacecraft digital twin model consists of multi-scale models,such as spacecraft system level digital twin model,subsystem level digital twin model and component level digital twin model.At the same time,the spacecraft digital twin model is also composed of multi-dimensional models,such as structure model,software mod-el,circuit model and so on.How to integrate multi-scale model and multi-dimensional model into a whole digital twin model according to certain norms has become a key research content in the field of MBSE.A universal con-struction method of spacecraft digital twin model is presented in this paper,and a practical scheme based on the principle of operating system is also put forward for the design architecture and principle of the general operation platform of spacecraft digital twin model.