天拓五号卫星推进系统在轨故障诊断与定位方法

On-orbit fault diagnosis and location method for the propulsion system of the TianTuo-5 satellite

为保障天拓五号卫星顺利开展在轨科学试验任务,使用失效模式与影响分析方法,从发生率、严重性等多个角度,对卫星推进系统各部组件可能存在的风险进行系统性、综合性评估。根据卫星推进系统的工作特点,分别针对其在轨工作状态及待机状态,提出一套系统的故障检测与定位方法。所提方法在在轨实践中验证了有效性,成功保障了天拓五号的在轨健康运行,并为后续卫星推进系统的故障诊断工作积累了宝贵经验。

In order to ensure the successful on-orbit scientific test mission of TianTou-5 satellite,the possible risks of each component of the satellite propulsion system were systematically and comprehensively evaluated from the perspectives of incidence and severity by using failure mode and impact analysis methods.According to the working characteristics of the satellite propulsion system,a set of fault detection and location methods were proposed according to its on-orbit working state and standby state respectively.The effectiveness of the method is verified in the on-orbit practice,and the healthy operation of TianTuo-5 is successfully guaranteed,and valuable experience is accumulated for the fault diagnosis of the satellite propulsion system in the future.