The invention discloses an inertia-airflow coordinate system interactive aircraft airflow disturbance observer design method, which specifically comprises the following steps: determining a fixed-wing aircraft coordinate system for a fixed-wing aircraft under airflow disturbance, and calculating a flight path pitch angle, a flight path azimuth angle and a flight path roll angle under the airflow coordinate system according to a conversion relation among the coordinate systems; selecting coordinates under an inertial system and airspeed, a track inclination angle and a track inclination angle under an airflow system as system states, and establishing a position loop dynamic model of the fixed-wing aircraft under airflow interference; an equivalent auxiliary variable of airflow interference is defined, and the equivalent auxiliary variable is dynamically analyzed according to the position loop kinetic model; and designing the airflow disturbance observer according to a dynamic analysis result. According to the method, the non-deterministic equivalent auxiliary variables are introduced, decoupling estimation of airflow interference and the flight state can be achieved, and the method is more suitable for the scene that the aircraft violently maneuvers.
本发明公开了惯性‑气流坐标系交互的飞行器气流干扰观测器设计方法,具体步骤包括:针对气流干扰下的固定翼飞行器,确定固定翼飞行器坐标系,根据各坐标系之间的转换关系,计算气流坐标系下航迹俯仰角、航迹方位角与航迹滚转角;选取惯性系下坐标以及气流系下空速、航迹倾斜角和航迹倾斜角为系统状态,建立气流干扰下固定翼飞行器的位置回路动力学模型;定义气流干扰的等价辅助变量,根据位置回路动力学模型对等价辅助变量进行动态分析;根据动态分析结果设计气流干扰观测器。本发明引入了非确定等价辅助变量,能够实现气流干扰与飞行状态的解耦估计,更加适用于飞行器剧烈机动的场景。
Inertia-airflow coordinate system interactive aircraft airflow disturbance observer design method
惯性-气流坐标系交互的飞行器气流干扰观测器设计方法
2023-06-23
Patent
Elektronische Ressource
Chinesisch
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |