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Design of a chattering-free sliding mode control system for robust position control of a quadrotor

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In this paper, the major components of an unmanned aerial vehicle (UAV), including the flight control system, mechanical design, as well as the embedded electronic systems are reported. The ultimate aim is to use the developed platform in nuclear environments for decommissioning applications.
Due to the hazards and uncertainties present in these nuclear environments, a more basic control system may be unable to reliably control the UAV. Therefore, the main focus of this study is on the development of a robust multi-channel control system, based on sliding mode control (SMC), for nested position and
attitude control of a quadrotor UAV in 3D space. The robustness of the control systems is evaluated under parameter disturbance in the form of payload uncertainties. The final developed platform shall be capable of autonomous Simultaneous Localisation and Mapping (SLAM), however, this will be the subject of a separate study.