长期在轨推进系统故障诊断实时仿真技术研究

为了解决长期在轨航天器易出现故障的推进系统故障常规地面检测费时费力且无法完全包络全部故障模式的问题，提出了长期在轨推进系统故障诊断实时仿真技术方案，建立了长期在轨推进系统故障诊断实时测试平台。通过建立推进系统实时仿真模型，实现对长期在轨推进系统的实时仿真；依托实时测试平台对推进系统故障诊断策略进行仿真优化、对在轨飞行器故障进行诊断、并对处置预案进行验证支持故障处置决策。长期在轨推进系统故障诊断实时测试平台有效缩短了器上故障诊断策略的优化迭代周期，同时节省了大量原本用来进行试车的经费。

Research on real-time simulation technology of fault diagnosisof long-term on-orbit propulsion system

In order to solve the problem of time-consuming and laborious conventional ground detection of propulsion system faults that are prone to faults in long-term on-orbit spacecrafts and unable to envelope all fault modes, a real-time simulation scheme for fault diagnosis of long-term on-orbit propulsion system is proposed, and a real-time test platform for fault diagnosis of long-term on-orbit propulsion system is established. Real-time simulation of long-term on-orbit propulsion system is realized by establishing real-time simulation model of propulsion system. Based on the real-time test platform, the fault diagnosis strategy of propulsion system is simulated and optimized, the fault of on-orbit aircraft is diagnosed, and the disposal plan is verified to support the fault disposal decision. The real-time test platform for fault diagnosis of long-term on-orbit propulsion system effectively shortens the optimization iteration period of on-board fault diagnosis strategy, and saves a large amount of funds originally used for fire tests.