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Showing 1 to 20 of 31 for “"Unmanned Air Vehicles"”.
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Onboard Video Stabilization for Unmanned Air Vehicles
<p>Unmanned Air Vehicles (UAVs) enable the observation of hazardous areas without endangering a pilot. Observational capabilities are provided by on-board video cameras and images are relayed to remote operators for analysis. However, vibration and wind cause video camera mounts to move and can …
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Remote Terrain Navigation for Unmanned Air Vehicles
There are many applications for which small unmanned aerial vehicles (SUAVs) are well suited, including surveillance, reconnaissance, search and rescue, convoy support, and short-range low-altitude perimeter patrol missions. As technologies for microcontrollers and small sensors have improved, so …
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Obstacle Avoidance for Small Unmanned Air Vehicles
Small UAVs are used for low altitude surveillance flights where unknown obstacles can be encountered. These UAVs can be given the capability to navigate in uncertain environments if obstacles are identified. This research presents an obstacle avoidance system for small UAVs. First, a mission …
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Panoramic Video for Efficient Ground Surveillance from Small Unmanned Air Vehicles
As unmanned air vehicle (UAV) utilization increases in Wilderness Search and Rescue (WiSAR) efforts, onboard sensors yielding more information will be desired. UAVs can assist WiSAR efforts by accelerating the ground search process through returning quality aerial footage of the terrain. …
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Macro Fiber Composite Actuated Unmanned Air Vehicles: Design, Development, and Testing
The design and implementation of a morphing unmanned aircraft using smart materials is presented. Articulated lifting surfaces and articulated wing sections actuated by servos are difficult to instrument and fabricate in a repeatable fashion on thin, composite-wing micro-air-vehicles. Assembly is …
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Global Positioning System navigation and digital communications for cooperating Unmanned Air Vehicles
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Multi-level Control Architecture and Energy Efficient Docking for Cooperative Unmanned Air Vehicles
… has been made in improving the performance of unmanned air vehicles in terms of aerodynamic performance, endurance, autonomy, and the capability of on-board sensor packages. UAVs are now a vital part of both military actions and scientific research efforts. One of the newest classes of UAV is …
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Autonomous Sensing and Navigation in Challenging Environments Using Unmanned Air Vehicles in Single- and Multi-Agent Settings
Small unmanned air systems (UAS), due to their navigational versatility and ability to operate autonomously, serve as an intriguing platform on which to carry out advanced sensing operations in otherwise untraversable or prohibitively dangerous environments. The need for UAS to be able to …
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Flow control techniques in a serpentine inlet : an enabling technology to increase the military viability of unmanned air vehicles
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2003.
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Consensus Seeking, Formation Keeping, and Trajectory Tracking in Multiple Vehicle Cooperative Control
… problems with applications to mobile robots, unmanned air vehicles, autonomous underwater vehicles, satellites, aircraft, spacecraft, and automated highway systems, or non-formation control problems such as task assignment, cooperative transport, cooperative role assignment, air traffic …
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Decentralized control for UAV path planning and task allocation
… of this research is to move toward enabling Unmanned Air Vehicles to fly in autonomous formations with intelligent mission planning capabilities. In particular, UAVs will be able to autonomously perform path planning and task allocation. During missions, the UAVs must be able to avoid threats …
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Transitions Between Hover and Level Flight for a Tailsitter UAV
<p>Vertical Take-Off and Land (VTOL) Unmanned Air Vehicles (UAVs) possess several desirable characteristics, such as being able to hover and take-off or land in confined areas. One type of VTOL airframe, the tailsitter, has all of these advantages, as well as being able to fly in the more …
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Development of Deployable Wings for Small Unmanned Aerial Vehicles Using Compliant Mechanisms
<p>Unmanned Air Vehicles (UAVs) have recently gained attention due to their increased ability to perform sophisticated missions with less cost and/or risk than their manned counterparts. This thesis develops approaches to the use of compliant mechanisms in the design of deployable wings for small …
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Trajectory design and vehicle guidance for a mid-air rendezvous between tow autonomous aircraft
The Parent Child Unmanned Air Vehicles (PCUAV) project is the fruit of a four year collaboration between M.I.T. and the Draper Lab. PCUAV aimed at providing close range observation from a distance using a low cost autonomous system. After defining the concept for the two first years, the PCUAV team …
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Some tracking problems for aerospace models with input constraints
… of planar vertical takeoff and landing (PVTOL) aircraft and unmanned air vehicles (UAVs). The novelty of our PVTOL work is the global boundedness of our controllers in the decoupled coordinates, the positive uniform lower bound on the thrust controller, the applicability of our work to cases …
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Real-Time Implementation of Vision Algorithm for Control, Stabilization, and Target Tracking for a Hovering Micro-UAV
… vision solution in determining movement of small unmanned air vehicles that have size, weight, and power limitations. Experimental results show the Helio-copter capable of maintaining level, stable flight within a 6 foot by 6 foot area for over 40 seconds without human intervention.
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Vision-based Target Localization from a Small, Fixed-wing Unmanned Air Vehicle
Unmanned air vehicles (UAVs) are attracting increased attention as their envelope of suitable tasks expands to include activities such as perimeter tracking, search and rescue assistance, surveillance and reconnaissance. The simplified goal of many of these tasks is to image an object for tracking …
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Coalition Formation In Multi-agent Uav Systems
… work considers six different capabilities of Unmanned Air Vehicles (UAV) and determines the nature of the new operator in the context of each capability as coalitions (squadrons) of UAVs are formed. Coalitions are formed using three different search algorithms, both with and without …
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Risk-Aware Planning for Sensor Data Collection
<p>With the emergence of low-cost unmanned air vehicles, civilian and military organizations are quickly identifying new applications for affordable, large-scale collectives to support and augment human efforts via sensor data collection. In order to be viable, these collectives must be resilient …
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Improved State Estimation for Miniature Air Vehicles
Research in Unmanned Air Vehicles (UAV's) continues to push the limitations of size and weight. As technical advances have made UAV's smaller and less expensive, they have become more flexible and extensive in their roles. To continue using smaller and less expensive components while retaining and …
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