121 Model-based Attitude and Hovering Control of Small Unmanned Helicopter

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In this paper, we propose the model based control system design for autonomous flight and guidance control of a small unmanned helicopter. A small unmanned helicopter has been studied with fuzzy and neural network theory, but it is very difficult for unmodel based control to stabilize it. For this reason, we design a mathmetical model(Mettler's model) and a model based controller for a small unmanned helicopter system. In order to realize a full automatic controlled small unmanned helicopter, we have designed the attitude controller and trajectory controller with kalman filter based LQI for a small unmanned helicopter. The characteristic of the attitude closed loop dynamics is taken into consideration to design a trajectory controller . By way of the simulations and experiments, it has been clarified that the proposed scheme for attitude control and guidence control is very useful.

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