旋转机翼无人机巡航状态飞行力学模型辨识  

Identification of CRW UAV's dynamic model in cruising mode

作　　者：王斑[1] 詹浩[1] 黄晶[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《飞行力学》2014年第2期179-182,188,共5页Flight Dynamics

摘　　要：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。Canard rotor wing（CRW） UAV has the flight characteristics of both the helicopter and fixed- wing aircraft. Mechanism model is constructed according to its flight characteristic in cruising mode, and the flight mechanic model identification is studied with the combination of frequency domain identification algorithm. Frequency sweep flight technique is used to obtain the flight data of canard rotor wing un- manned aerial vehicle near its cruising working condition, and frequency response is optimized with a new method for combining the results of multi-input frequency-response analyses obtained from a range of spectral windows into a single one. And then the transfer functions of both longitudinal and lateral chan- nels are acquired. It indicates that the model can reflect dynamic characteristics of the CRW UAV and can be used in the design of the flight control system through the verification of the model and real flight data in the time domain.

关 键 词：鸭式旋翼机翼无人机 巡航 频域辨识 扫频飞行试验 

分 类 号：V212.4[航空宇航科学与技术—航空宇航推进理论与工程]