The invention discloses an airplane icing on-line detection method based on statistical test and filtering. The airplane icing on-line detection method at least comprises the following steps that S1,flight state measurement data, engine thrust data and rudder deviation input data in the flight process are collected; S2, an icing starting moment is detected by utilizing a generalized likelihood ratio test method; S3, a disturbance signal is generated to be superposed on the rudder deviation input data, and joint state estimation and aerodynamic derivative identification influenced by icing areconducted on the flight state measurement data by utilizing an H-infinity filtering method; S4, an icing end moment is detected by utilizing the generalized likelihood ratio test method; and S5, generating and superposing of the rudder deflection disturbance signal are stopped, and joint state estimation and aerodynamic derivative identification influenced by icing continue to be conducted on themeasurement data by utilizing H-infinity filtering until the flight is finished. By combining quick icing detection and a parameter estimation method, an airplane icing detection algorithm with stronger functions is obtained.
本发明公开了一种基于统计检验和滤波的飞机结冰在线探测方法,所述飞机结冰在线探测方法至少包括如下步骤:S1:采集飞行过程中的飞行状态测量数据、发动机推力数据和舵偏输入数据;S2:利用广义似然比检验方法探测结冰开始时刻;S3:生成扰动信号叠加到舵偏输入数据上,同时利用H∞滤波方法对飞行状态测量数据进行联合状态估计和受结冰影响气动导数辨识;S4:利用广义似然比检验方法探测结冰结束时刻;S5:停止生成和叠加舵偏扰动信号,继续利用H∞滤波对测量数据进行联合状态估计和受结冰影响气动导数辨识直至飞行结束。通过将结冰快速检测与参数估计方法相结合,获得一种功能更强的飞机结冰探测算法。
Airplane icing on-line detection method based on statistical test and filtering
一种基于统计检验和滤波的飞机结冰在线探测方法
2020-12-08
Patent
Elektronische Ressource
Chinesisch
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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