多信息融合大气数据系统故障隔离技术研究

Fault Isolation Technology of Atmospheric Data System Based on Multi-Information Fusion Technique

飞行安全是高价值飞行器设计中必须重点关注和考虑的,涉及到飞行安全的系统一般被定义为飞行安全关键系统。通常,作为飞行安全关键系统之一的大气数据系统采用多余度设计的手段,以避免某一余度的故障或失效导致飞行事故或灾难的发生。然而,通过增加余度的方式尽管可以有效地提高系统的任务可靠度,增强系统的安全性,但同时也势必会导致系统成本的上升。随着技术的发展,采用多信息融合的技术,可以在保持最小余度设置的情况下,有效减少余度硬件的数量,既可以保证飞行安全,又能有效降低系统成本。

Flight safety is the key point in the design of high-value aircraft.Flight safety systems are generally defined as flight safety key systems.As one of the key systems of flight safety, the atmospheric data system is designed as a redundant system to avoid accidents due to its failure.By increasing the redundance, the system can improve the task reliability and enhance the security of the system, but lead to higher costs.With the development of technology, the use of multi-information fusion technique can ensure flight safety, reduce the requirement of hardware redundancy and costs under minimum redundant system configuration.