摘要
Abstract
The idea of Model Based Systems Engineering(MBSE)is adopted to conduct the lay-ered design,modeling,and verification of spacecraft flight scheme.Combined with the require-ment and architecture models,the linkage analysis is carried out to verify the correctness and in-tegrity of the flight scheme from multiple levels and perspectives.Firstly,a layered principle and design method for the spacecraft flight scheme based on model are proposed,which uses the SysML language to decompose the spacecraft flight scheme in a top-down manner according to the layer of flight phases,flight sub-phases,flight strategies and events,and flight actions,as well as the dimensions of the system of systems,system,subsystem,and stand-alone equipment and to achieve multiple professional collaborative modeling.Secondly,based on the flight scheme model,the multi-professional requirements of the spacecraft are derived item by item from each flight action.The association and traceability relationship between the flight scheme and the re-quirement models are established to improve the system level functional and performance require-ments of the spacecraft,while facilitating the rapid analysis of the impact domain between the flight scheme and requirements.Thirdly,the linkage simulation relationship between the flight scheme model and the spacecraft architecture model is established.Through flight actions and in-structions,the state display and internal signal transmission of the architecture model are driven to comprehensively verify the correctness and feasibility of the coordination between the space-craft flight program design and the operation of subsystems equipment.Furthermore,dynamic simulations are carried out based on the flight scheme model to verify the logical correctness of the scheme,and then the spacecraft flight program is generated.Finally,the flight scheme is re-viewed through lightweight models.Meanwhile,the mapping relationship between the model and the document template is established to automatically generate the flight scheme report for solidi-fication.Through the layered design and application of the manned lunar exploration flight scheme,the effectiveness of the layered modeling method of flight scheme based on model is veri-fied in this paper,as well as the superiority of the linkage with the spacecraft requirement model and architecture model,providing references for the design of flight scheme for other spacecraft with complex missions.关键词
基于模型的系统工程/飞行方案/分层设计/逻辑仿真/需求分析Key words
Model Based System Engineering(MBSE)/flight scheme/layered design/logical simu-lation/requirement analysis
