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鸭式旋翼机翼无人机兼有直升机和固定翼飞机的飞行特点,针对其在巡航状态下的飞行特性首先建立了机理模型,并与频域辨识算法相结合进行了飞机飞行力学模型辨识研究。利用扫频试飞技术获取了鸭式旋翼机翼无人机在巡航工作点附近的舵输入和飞机动态输出数据,采用复合窗算法得到优化的频率响应,获取了飞机纵横向通道的传递函数模型。通过时域验证表明,模型能够较好地反映飞机的动态特性,可以应用于飞行控制系统设计。
The helicopter and fixed-wing flight characteristics of the duck-wing rotary wing UAV firstly set up a mechanism model for its flight characteristics under cruising conditions, and combined with the frequency-domain identification algorithm to study the aircraft flight mechanics model identification . The flight input and aircraft dynamic output data of duck-wing rotary wing UAV near the cruising point were obtained by sweeping test. The optimized frequency response was obtained by the compound window algorithm, and the transfer function model of longitudinal and transverse channels was obtained. Time domain verification shows that the model can better reflect the dynamic characteristics of the aircraft and can be applied to the design of flight control system.