On Chaos Control of Small-scale Unmanned Helicopter Based Upon HODFC

The small-scale unmanned helicopter has the high main rotor speed and the light body, which makes it highly sensitive to disturbances. In the case of improper assembly and wind interference, the fuselage will shake violently, and even produce chaotic angular velocity oscillation behavior. In this paper, the situation of chaotic oscillation of the angular velocity is given. The high order differential feedback controller (HODFC) for the angular velocity of the helicopter is designed. The controller is independent of the mathematical model of the system, with simple structure and mathematical significance for parameter adjustment. Finally, the controller is loaded after the helicopter generates oscillations in chaotic situation. The angular velocity of the helicopter tends to the reference value rapidly after the controller is loaded, indicating that the HODFC constructed can stabilize the chaotic oscillation of the helicopter’s angular velocity.