Research On Flight Control Technology Of The Unmanned Helicopter

Unmanned Helicopter (UMH) has very important application value in military and civilian domain because of its unique flight property. After having analyzed the mathematics model of UMH and studied UMH control systems, this paper researched on the design technique of flight control law for the UMH and implementation technique for UMH control systems.Firstly, the mathematical model of UMH was analyzed. With the help of the increment function of small signal perturbation, the stability and dynamics coupling are researched and the coupling relations of the channels are got.After having used an inner/outer loop structure and followed the helicopter handing quality specification ADS-33C, the paper designed RCAH-based response type in inner loop based on eigenstructure assignment and the inner loop design decouples helicopter dynamics. The parameter optimization was also implemented. A type of adaptive controller is designed and simulation results are provided. The control laws of attitude, velocity and other holding flight modes were designed using the method of classical control theory. The simulation results demonstrate that the control system has good characters. Control strategy and control law of the UAH's engine is presented.Finally, the overall scheme was designed according to the requirements and the overall design scheme of a certain type of flight control system. Then the structure and configuration of the system were implemented, the hardware of the flight control computer was designed. The results of the tests using special equipment showed that the computer works well, and the requirements of the flight control computer for the certain type of unmanned helicopter were implemented.