运载火箭多表冗余捷联惯组的故障诊断与决策

为了提高运载火箭惯导系统的可靠性,介绍了一种多表冗余捷联惯性测量组合的故障诊断和冗余信息重构技术,对陀螺仪和加速度计信息采取三取二的冗余、诊断的管理策略,将故障定位到具体惯组的某个敏感轴,对故障惯组隔离后进行信息重构,实现故障情况下的导航信息的正常输出,增强了运载火箭对惯组故障的适应能力。

Fault Diagnosis and Decision-making for Launch Vehicle SIMU with Meters Redundancy

To improve the reliability of launch vehicle inertial navigation system, a kind of failure diagnosis and redundancy information reconstruction technology based on strapdown inertial measurement units with meters redundancy is introduced. The method can diagnose redundancy information of gyro and accelerometer by using redundancy and diagnosis management strategy. The failure can be targeted to the specific sensitive axis of meter. After SIMU with failures insulated, the redundancy information is reconstructed. It realizes SIMU normal output in condition of failure, and enhances the adaptability of launch vehicle for SIMUs failures.