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In this paper, a leader-follower formation control of multiple unmanned aerial vehicles (UAVs) design methodology is proposed to keep the desired formation, while simultaneously deal with the potential collision and actuator faults. The proposed formation control is divided into outer-loop and inner-loop controllers. First, a leader-follower control structure is constructed as the outer-loop controller...
This paper presents a trajectory tracking controller for multi-rotor UAVs to improve their flight performance in the presence of various uncertainties. The proposed tracking system consists of a velocity guidance law based on relative distance and an L1 adaptive augmentation loop for tracking velocity commands. In the proposed structure, the desired velocity generated by the guidance law is the reference...
In this paper, we propose an Integrated Fault Tolerant Controller (IFTC) for quadrotor UAVs based on Sliding Mode Passive and Active FTCs, along with Trirotor conversion maneuver. A Sliding Mode Observer is used to detect and estimate actuator faults affecting rotors, and a fault severity based decision station activates the suitable controller. The new controller not only ensures fault tolerance,...
This paper presents a new intelligent agent framework that combines rational decision making with abstractions of sensing and actions for unmanned aerial vehicle (UAV) control systems. The objective of the new framework is to provide self tuning and more adaptability to an onboard autopilot. This is achieved through controlloer switching and tuning by the agent in face of dynamic changes affecting...
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