基于MBSE的对流层飞艇运行概念研究

Research on the concept of operation for tropospheric airship based on MBSE

面向对流层飞艇起降过程复杂、气象适应能力弱等特殊性,传统基于文本的运行概念分析方法具有设计一致性较差、设计无法有效追溯、验证困难等局限性。基于此,提出了基于模型的系统工程的对流层飞艇运行概念设计方法。首先,建立系统用例与利益攸关者需求的关联关系,保证了设计可追溯性。然后,基于活动图、时序图与内部块图建立对流层飞艇运行场景模型,详细梳理了飞艇运行的执行逻辑与外部交互关系。通过执行状态机对飞艇运行概念模型进行验证,并进一步补充完善利益攸关者需求。最后,通过执行状态机验证了该无人飞艇系统能够满足任务飞行、飞行控制和应急情况响应等利益攸关者的需求。

In the face of the particularity of tropospheric airship complex takeoff and landing process and weak meteorological adaptability,the traditional text-based approach concept of operation(ConOps)analysis has some limitations such as poor design consistency,ineffective design traceability and difficult verification.Based on this,the model-based system engineering(MBSE)method for ConOps of tropospheric airship is proposed.At first,a association relationships between system use cases and stakeholder requirements is established to ensure the traceability of the design.Then,based on the activity diagram,sequence diagram and internal block diagram,the airship operation scene model is established,and the execution logic and external interaction relationship of airship operation are sorted out in detail.The state executing machine model is implemented to verify the model of ConOps and further complement and refine the stakeholder requirements.Finally,the unmanned airship system is validated by executing a state machine to meet the needs of stakeholders such as mission flight,flight control,and emergency response.