运载火箭动力系统突发性故障检测与辨识

Detection and Recognition of Burst Fault in Dynamical System of Launch Vehicle

航天是一个高风险的领域 ,一次不成功的发射试验可能带来的经济损失动辄上亿元 ,甚至会出现灾难性后果。因此 ,故障诊断技术在航天工程领域具有极端的重要性和明显的工程价值。本文以运载火箭动力系统突发性故障为研究对象 ,采用解析冗余方法 ,建立了分别适用于脉冲型故障和阶跃型故障的检测方法 。

Aerospace industry is a high?risk industry, an unsuccessful launch test may cause great loss of millions, even catastrophe. Therefore, fault diagnosis technique is very important and valuable in aerospace engineering. In this paper, detection approaches of pulse fulse faults and step faults in terms of dynamical system of launch vehicle are established respectively by using analytic redundancy method, estimation algorithm of faults amplitude is presented as well.