基于马氏距离的液体火箭发动机稳态过程故障程度评估方法

Discussion on Fault Degree Assessment Method for Steady Process of Liquid Propellant Rocket Engine Based on Mahalanobis distance

摘要:

当前健康管理技术在我国航天领域的发展还未完全成熟,国内针对运载火箭稳态飞行过程的故障检测与评估进行的工作还较少,而未来对于运载火箭牵制释放、动力重构等技术的应用,以及对可重复使用技术的需求,火箭稳态飞行过程的故障检测和评估将是其重要的技术支撑,具有十分重大的意义,因此提出一种基于马氏距离的液体火箭发动机稳态过程故障程度评估方法,并通过采用液体火箭发动机的仿真数据验证了算法的有效性,为运载火箭发动机健康评估技术的发展提供了一定的借鉴作用。

Abstract:

The current development of health management techniques in the field of aerospace is not fully mature in our country. Domestic research for fault detection and assessment of the steady-state process is still insufficient. To the application of MECO technology(Falcon) and hold-on and release lift off technology, and the demand for reusable technology, fault detection and assessment techniques will be important technical supports. This paper puts forward a fault degree evaluation method based on Mahalanobis distance and verified the correctness of the algorithm with simulation data.