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Aerodynamics, Modeling and Control of an Autono...
91,50 € *
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Rotor and control design are two of the most challenging tasks during the development of an autonomous micro helicopter. Both areas are strongly affected by the extremely small size of the vehicle.The rotors are working in the low Reynolds numbers reducing efficiency and limiting the autonomy time of the helicopter. On the control side the small size leads to faster system dynamics and limits the payload for accurate sensors and actuators. These challenges and how to address them are the main topics of this book.In order to increase rotor efficiency, the influence of various blade parameters, lift enhancing devices and the drive train is investigated. The control problem is addressed by developing a nonlinear model for the coaxial helicopter muFly. In order to find the system parameters an identification process is carried out. Finally, the control strategy is presented including both high-level and low-level aspects.Altogether, this book serves as a guideline for other researchers and engineers who aim to develop an autonomous micro helicopter the size and mass of a small bird.

Anbieter: Dodax AT
Stand: 24.01.2020
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Aerodynamics, Modeling and Control of an Autono...
89,00 € *
ggf. zzgl. Versand

Rotor and control design are two of the most challenging tasks during the development of an autonomous micro helicopter. Both areas are strongly affected by the extremely small size of the vehicle.The rotors are working in the low Reynolds numbers reducing efficiency and limiting the autonomy time of the helicopter. On the control side the small size leads to faster system dynamics and limits the payload for accurate sensors and actuators. These challenges and how to address them are the main topics of this book.In order to increase rotor efficiency, the influence of various blade parameters, lift enhancing devices and the drive train is investigated. The control problem is addressed by developing a nonlinear model for the coaxial helicopter muFly. In order to find the system parameters an identification process is carried out. Finally, the control strategy is presented including both high-level and low-level aspects.Altogether, this book serves as a guideline for other researchers and engineers who aim to develop an autonomous micro helicopter the size and mass of a small bird.

Anbieter: Dodax
Stand: 24.01.2020
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Autonomous Helicopter Landing
56,50 € *
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We consider the problem of controlling the vertical motion of a nonlinear model of a helicopter during landing, while stabilizing the lateral and longitudinal position and maintaining a constant attitude. The dynamics of the helicopter main and tail rotors are often neglected to simplify the control design, but this reduction has the disadvantage of an unreal choice of the control inputs. We have solved this contradiction by choosing the main controller required for performing the secure landing by neglecting the complex rotors dynamics, and then we have included these important dynamics in a closed loop model having real controls determined from an auxiliary controller. Simulation results show the effectiveness of the method to cope with uncertainties on the plant and actuator model. We apply a nonlinear controller which combines recent results on nonlinear adaptive output regulation and robust stabilization of systems in feed forward form by means of saturated controls. The added dynamics required the design of an auxiliary controller to force the states of the main and tail rotors systems to follow their reference values determined from the main controller.

Anbieter: Dodax AT
Stand: 24.01.2020
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Autonomous Helicopter Landing
54,90 € *
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We consider the problem of controlling the vertical motion of a nonlinear model of a helicopter during landing, while stabilizing the lateral and longitudinal position and maintaining a constant attitude. The dynamics of the helicopter main and tail rotors are often neglected to simplify the control design, but this reduction has the disadvantage of an unreal choice of the control inputs. We have solved this contradiction by choosing the main controller required for performing the secure landing by neglecting the complex rotors dynamics, and then we have included these important dynamics in a closed loop model having real controls determined from an auxiliary controller. Simulation results show the effectiveness of the method to cope with uncertainties on the plant and actuator model. We apply a nonlinear controller which combines recent results on nonlinear adaptive output regulation and robust stabilization of systems in feed forward form by means of saturated controls. The added dynamics required the design of an auxiliary controller to force the states of the main and tail rotors systems to follow their reference values determined from the main controller.

Anbieter: Dodax
Stand: 24.01.2020
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Design and dynamic modeling of autonomous coaxi...
82,20 € *
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This book is a result of the European framework project muFly, aiming at the design and realization of an autonomous micro helicopter comparable to a small bird in size and mass. It introduces two prototype designs for the muFly helicopter: a modular one for fast sensor and actuator exchange and easy configuration testing, and a highly integrated design to reduce the total mass and integrate the complete sensor set for autonomous flight. Furthermore, a theoretical foundation for coaxial micro helicopter design is laid. In particular focus are passive stabilization and steering principles of the helicopter. A modular dynamic model is developed, which incorporates the characteristics of a hingeless rotor system, two optional steering principles, and a stabilizer bar module, which is also validated experimentally. Finally, the dynamic model is used for a design parameter study of the most relevant system design parameters. It aims at passive roll and pitch stabilization of the helicopter without a stabilizer bar. By illuminating the aspects of prototype design, dynamic modeling, simulation, and design parameter optimization, this book is a contribution towards palm-sized MAVs.

Anbieter: Dodax AT
Stand: 24.01.2020
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Design and dynamic modeling of autonomous coaxi...
79,90 € *
ggf. zzgl. Versand

This book is a result of the European framework project muFly, aiming at the design and realization of an autonomous micro helicopter comparable to a small bird in size and mass. It introduces two prototype designs for the muFly helicopter: a modular one for fast sensor and actuator exchange and easy configuration testing, and a highly integrated design to reduce the total mass and integrate the complete sensor set for autonomous flight. Furthermore, a theoretical foundation for coaxial micro helicopter design is laid. In particular focus are passive stabilization and steering principles of the helicopter. A modular dynamic model is developed, which incorporates the characteristics of a hingeless rotor system, two optional steering principles, and a stabilizer bar module, which is also validated experimentally. Finally, the dynamic model is used for a design parameter study of the most relevant system design parameters. It aims at passive roll and pitch stabilization of the helicopter without a stabilizer bar. By illuminating the aspects of prototype design, dynamic modeling, simulation, and design parameter optimization, this book is a contribution towards palm-sized MAVs.

Anbieter: Dodax
Stand: 24.01.2020
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Design & Development of a UAV Autonomous Contro...
74,00 € *
ggf. zzgl. Versand

This book attempts to provide a platform for the autonomous control of a UAV in the form of a RC helicopter. This model is intended to serve as groundwork to related projects in the near future. It is hoped that with the passage of time the project will achieve the status that is intended for it. Though various methods exist for the implementation of this scheme, the team has decided to follow up with an approach that involves controlling the helicopter with the help of an on-board UAV kit and its controlling station. Though this approach might sound uneasy, the approach is an inexpensive and more flexible when compared with the other solutions like the autopilot. Using a closed loop control strategy, the project intends to stabilize the helicopter based on the information from the sensors received. After the values are received at the control station, the control station sends the required "remedial servo commands to allow the helicopter to stabilize itself.

Anbieter: Dodax AT
Stand: 24.01.2020
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Design & Development of a UAV Autonomous Contro...
71,90 € *
ggf. zzgl. Versand

This book attempts to provide a platform for the autonomous control of a UAV in the form of a RC helicopter. This model is intended to serve as groundwork to related projects in the near future. It is hoped that with the passage of time the project will achieve the status that is intended for it. Though various methods exist for the implementation of this scheme, the team has decided to follow up with an approach that involves controlling the helicopter with the help of an on-board UAV kit and its controlling station. Though this approach might sound uneasy, the approach is an inexpensive and more flexible when compared with the other solutions like the autopilot. Using a closed loop control strategy, the project intends to stabilize the helicopter based on the information from the sensors received. After the values are received at the control station, the control station sends the required "remedial servo commands to allow the helicopter to stabilize itself.

Anbieter: Dodax
Stand: 24.01.2020
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Autonomous Flying Robots
192,59 € *
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The advance in robotics has boosted the application of autonomous vehicles to perform tedious and risky tasks or to be cost-effective substitutes for their - man counterparts. Based on their working environment, a rough classi cation of the autonomous vehicles would include unmanned aerial vehicles (UAVs), - manned ground vehicles (UGVs), autonomous underwater vehicles (AUVs), and autonomous surface vehicles (ASVs). UAVs, UGVs, AUVs, and ASVs are called UVs (unmanned vehicles) nowadays. In recent decades, the development of - manned autonomous vehicles have been of great interest, and different kinds of autonomous vehicles have been studied and developed all over the world. In part- ular, UAVs have many applications in emergency situations, humans often cannot come close to a dangerous natural disaster such as an earthquake, a ood, an active volcano, or a nuclear disaster. Since the development of the rst UAVs, research efforts have been focused on military applications. Recently, however, demand has arisen for UAVs such as aero-robotsand ying robotsthat can be used in emergency situations and in industrial applications. Among the wide variety of UAVs that have been developed, small-scale HUAVs (helicopter-based UAVs) have the ability to take off and land vertically as well as the ability to cruise in ight, but their most importantcapability is hovering. Hoveringat a point enables us to make more eff- tive observations of a target. Furthermore, small-scale HUAVs offer the advantages of low cost and easy operation.

Anbieter: Dodax
Stand: 24.01.2020
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