基于代理的航天器自主运行仿真系统设计与验证系统设计

Agent-based spacecraft Autonomous health fault simulation System design and verification

摘要:

针对目前航天器自主健康管理功能测试过程中，由于故障模拟手段不足造成测试覆盖率低，测试项目不完备，测试效率低等问题，提出一种基于代理的航天器自主健康故障仿真验证系统设计方案。基于该方案实现的故障仿真系统支持根据通用化航天器自主健康故障检测模型，严格按逻辑和时序，无延迟、持续的向全实物或半实物测试系统自动注入故障状态表征参数，模拟航天器整器或任意分系统、单机、软件的故障状态，拟弥补了长期以来在实物测试环境下,整器故障模式测试覆盖率低，测试用例复用性差的问题。实践证明，此方法能将测试覆盖率提升至95%以上，并将测试时间缩短至传统方式的1/6，有效提升被测航天器产品可靠性。

Abstract:

Due to insufficient fault simulation methods for the spacecraft autonomous health management system software test, the test coverage rate is not high enough to satisfy the functional test demands, the paper proposed an agent-based spacecraft autonomous health fault simulation strategy. The fault simulation system which was built based on the simulation strategy supports to injects faults data into a whole physical or a semi-physical spacecraft system according to a predetermined logic or timing to simulate any faults status of a spacecraft, subsystem, device or software. For a long time, it was difficult to inject fault to a real spacecraft system without doing damages to the real system, and it was difficult to apply enough fault mode test. However, the fault simulation strategy proposed by the paper can effectively solve the above problem, improve test efficiency and test effectiveness, accordingly improve the reliability of spacecraft products.