Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"quad-rotor"”.
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Control of quad-rotor UAVs using switched-system synthesis methods
… applies switched systems synthesis and linear quadratic regulator (LQR) theory to control of a quad-rotor unmanned aerial vehicle (UAV). The thesis presents the development of the system dynamics, the theory of LQR and its implementation, the synthesis and simulation results of switched control …
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An embedded controller for quad-rotor flying robots running distributed algorithms
Multiple collaborating quad-rotor flying robots are useful in a broad range of applications, from surveillance with onboard cameras to reconfiguration of wireless networks. For these applications, it is often advantageous to have the robot team be a distributed system. In this thesis, an embedded …
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Stabilization and Control of a Quad-Rotor Micro-UAV Using Vision Sensors
Quad-rotor micro-UAVs have become an important tool in the field of indoor UAV research. Indoor flight poses problems not experienced in outdoor applications. The ability to be location- and movement-aware is paramount because of the close proximity of obstacles (walls, doorways, desks). The …
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Modeling, identification and control of a quad-rotor drone using low-resolution sensing
… of an electrical-motor drive model-scale quadrotor --- the AR.Drone. Equations of Motion of drone’s model were derived from Kinemics and Dynamics of common quadrotors. The identification was conducted thoroughly including its low-resolution on-board sensors, such as rate gyro and …
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An investigation of a scalable flight control system for a variable pitch, fuel powered, quad-rotor craft
Submitted in the fulfillment of requirements of the degree of Master of Mechanical Engineering, Durban University of Technology, Durban, South Africa, 2023.
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Integration of potential field theory and proportional navigation theory to autonomously guide an unmanned aerial vehicle.
… avoiding obstacles in its path. A model for a quad rotor style UAV is developed and controlled using feedback linearization. A simulator is built for deploying a number of environments and taking performance measurements. Aspects of the hardware implementation are introduced.
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Development of a Landing Period Indicator and the Use of Signal Prediction to Improve Landing Methodologies of Autonomous Unmanned Aerial Vehicles on Maritime Vessels
… environment, where the test vehicle is a quad-rotor UAV that is equipped with a light detection and ranging system to aerially detect ship motion. The observed ship motion is forecasted using signal prediction which identifies and notifies the UAV of potential landing opportunities. The …
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Exploring the material properties of small scale folded structures
… in printable robots, particularly the printable quad-rotor frame. As expected the composite acrylic and PEEK triangular beam had the highest bending stiffness El at 4.15 ± 1.67 N*m2. The lowest El was the triangular PEEK beam in its weak configuration at 0.02 ± 0.005 N*m2. 3D printed ABS beams …
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Design of an adaptive 3-dimensional display enabled by a swarm of autonomous micro air vehicles
… compensation, designed for control of a quad-rotor helicopter in the presence of aerodynamic interference generated by other vehicles in swarm-like operational conditions. System requirements and driving factors are identified, and various types of overall system architectures as well as …
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Real-Time Implementation of Vision Algorithm for Control, Stabilization, and Target Tracking for a Hovering Micro-UAV
A lightweight, powerful, yet efficient quad-rotor platform was designed and constructed to obtain experimental results of completely autonomous control of a hovering micro-UAV using a complete on-board vision system. The on-board vision and control system is composed of a Helios FPGA board, an …
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Guidance and Control System for VTOL UAVs operating in Contested Environments
… the feedback-linearized equations of motion of a quadcopter. For collision avoidance, standalone versions of 4 different constraint generation algorithms are evaluated to compare their resulting computation times, accuracy, and computed volume on a voxel map that simulates a 2-story house along …