小型无人倾转旋翼机全模式飞行操纵控制

Full Envelope Flight Control Method for Small Unmanned Tilt Rotor Aircraft

研究了倾转旋翼机的飞行数学方程,建立了小型无人倾转旋翼机在直升机、倾转及飞机飞行模式的飞行力学仿真模型,计算得出配平工作点处各通道的操纵量和飞行器的飞行姿态,通过各飞行模式的仿真结果确定了该飞行器的全模式飞行策略,飞行试验表明仿真结果符合倾转旋翼机的飞行特性。最后利用特征结构配置算法对小型倾转旋翼机进行解耦控制,并得到良好的解耦效果。

The flight dynamic equations of tilt rotor aircraft are studied, and the flight dynamically mathematical model for the helicopter, tilting and airplane flight modes is established. Through the simulation, the control quantity of every control access and flight attitudes at the tilt rotor aircraft trim points in full envelope flight is obtained, and the flight strategy in full envelope is determined. Flight test results indicate that the simulation results are in agreement with the flight characteristics. Finally, the good uncoupled effects are obtained by using eigen-structure assignment method.