临近空间艇载计算机余度管理策略研究

平流层飞艇是可靠性要求很高的系统，需要由具有容错能力的艇载计算机来进行控制和管理。针对艇载计算机采用的余度结构进行了软件管理策略的研究和设计，提出了基于异构总线的握手机制节点故障检测方法、基于“看门狗”与“心跳”相结合的 CPU 故障检测方法、基于节点健康矩阵的互援式总线重构方法及基于有限状态机的多 CPU 并行处理系统自适应重构方法。故障注入试验表明，艇载计算机在遇到故障时能实时检测出故障，诊断故障类型，并对故障进行处理，实现系统重构，保证了平流层飞艇长期驻空时的安全飞行。

Research on Redundancy Management of Near Space Airship Computers

Near space airship needs computer systems with fault tolerance to achieve high reliability. Based on the redundancy hardware of the computer used in near space airship, a software management strategy is proposed. The fault check and reconstruction method for data bus and multi-CPU system are put forward. The fault injection experiments show that, when fault happens, the redundant computer can detect and diagnose the fault in real-time. Meanwhile, it can also handle fault and reconstruction, improving the reliability of airship computer system and ensuring fight airship safety .