飞机起落架防滑刹车系统鲁棒故障诊断方法

根据飞机着陆和滑跑过程中飞机起落架系统的作用,将其划分为缓冲系统和防滑刹车系统两部分。在分别建立这两部分的数学模型的基础上,以干扰抑制为目标,进行鲁棒控制和观测器设计。国产某型飞机起落架防滑刹车系统残差仿真分析表明,采用这种鲁棒故障检测观测器方法,即使系统存在较大干扰,也可以给出故障的鲁棒诊断。

Robust Fault Diagnosis Approach for an Anti-Skid Braking System of Plane's Landing Gear

In this paper,according to the functions of the landing gear during the processes of landing and sliding,the landing gear system of the airplane was divided into two parts: buffer system and anti-skid braking system. Based on the mathematic models of these two parts,the robust controller and observer were designed to depress the disturbances.By adopting the robust observer,the analyses of the residual error in the anti-skid braking system for domestic plane's landing gear show that the robust diagnosis of fault can be given out although there are more disturbances in the system.