Download or read book Design and Integration of a Flight Management System for the Unmanned Air Vehicle Frog written by Timothy C. Rivers and published by . This book was released on 1998-12-01 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to design, integrate and flight test a Flight Management System (FMS) for the computer control of an unmanned air vehicle (UAV). By combining modern control design techniques and the capabilities of a Rapid Prototyping System (RPS), we were able to safely go from concept to flight test in a relatively short amount of time without sacrificing thoroughness in computer simulation, code validation and verification, or hardware-in-the-loop ground testing. This ability to quickly field new or modified flight control systems for UAV's is of ever increasing importance as Department of Defense places greater emphasis on the use of UAV's in widely varying mission areas. The primary focus of this thesis is on the design and testing of a heading controller. However, to fully integrate this into the FMS, the research and testing includes airspeed and altitude controllers designed by previous thesis students. Also included as part of the implementation process, is a thorough sensor evaluation to ensure the controller inputs are adequate to support the FMS. The design and test equipment include a highly modified FROG UAV from the U.S. Army, the MATRIX Product Family of software tools developed by Integrated Systems, Inc., and a Ground Station built at NPS from commercially available computer and communication equipment.

Download or read book Design and Rapid Prototyping of Flight Control and Navigation System for an Unmanned Aerial Vehicle written by Bock Aeng Lim and published by . This book was released on 2002-03-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work in this thesis is in support of a larger research effort to implement a cluster of autonomous airborne vehicles with the capability to conduct coordinated flight maneuver planning and to perform distributed sensor fusion, Specifically, it seeks to design and implement an onboard flight control and navigation system for NPS FROG UAV, which will be used as the autonomous airborne vehicle for the research, using the newly marketed xPC Target Rapid Prototyping System from The Mathworks, Inc Part I briefly introduces the aircraft and explains the necessity for an onboard computer for the UAV. Part II describes the construction of the miniature aircraft computer, INS/GPS and air data sensor integration implementation as well as the rapid prototyping process. Part III covers the process to create a 6DOF model for the aircraft and the design of the aircraft autopilot, while Part IV presents a vision-based navigation algorithm that can be implemented on the UAV to give it some form of autonomous flight trajectory planning capability. Preliminary ground test results are presented in Part V to conclude this study.

Download or read book Design and Evaluation of a Digital Flight Control System for the FROG Unmanned Aerial Vehicle written by Christopher H. Flood and published by . This book was released on 2001-09-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of unmanned aerial vehicles (UAVs) to current and future military operations cannot be understated. This rapidly developing field requires the ability to quickly develop and evaluate advanced control concepts. The FROG UAV serves as a test bed for advanced control and sensor projects at the Naval Postgraduate School. Previous control system projects have made use of a low performance electromechanical autopilot onboard the UAV. This autopilot imposed significant limitations on the responsiveness of the FROG. This project developed and tested an off board digital flight control system for use in lieu of the previous electromechanical device. The digital flight controller was developed using the Matrixx rapid prototyping system and a previously validated dynamic model of the FROG. Surrogate flight control servo actuators were characterized in the laboratory and added to the plant model. Classic inner/ outer loop controllers were developed for yaw damping and speed, altitude and heading control. The system was then successfully demonstrated%ted with hardware in the loop in the lab. The FROG was then instrumented and a command uplink latency of 170 MS was discovered. This introduced excessive phase lag into the system, which drove the flight controllers unstable. An alternate serial uplink method was developed and tested which reduced the command latency to 76 MS however the remaining phase lag resulted in limit cycle oscillation. Laboratory tests indicated that the current flight controller could withstand a maximum of 50 MS command path delay; without modification.

Download or read book Fault tolerant Flight Control and Guidance Systems written by Guillaume J. J. Ducard and published by Springer Science & Business Media. This book was released on 2009-05-14 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a complete overview of fault-tolerant flight control techniques. Discussion covers the necessary equations for the modeling of small UAVs, a complete system based on extended Kalman filters, and a nonlinear flight control and guidance system.

Download or read book Flight Control System Design and Avionics for Unmanned Aerial Vehicle written by Takahiro Ishige and published by . This book was released on 2002 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flight Formation Control written by Josep M. Guerrero and published by John Wiley & Sons. This book was released on 2012-12-17 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade the development and control of Unmanned Aerial Vehicles (UAVs) has attracted a lot of interest. Both researchers and companies have a growing interest in improving this type of vehicle given their many civilian and military applications. This book presents the state of the art in the area of UAV Flight Formation. The coordination and robust consensus approaches are presented in detail as well as formation flight control strategies which are validated in experimental platforms. It aims at helping students and academics alike to better understand what coordination and flight formation control can make possible. Several novel methods are presented: - controllability and observability of multi-agent systems; - robust consensus; - flight formation control; - stability of formations over noisy networks; which generate solutions of guaranteed performance for UAV Flight Formation. Contents 1. Introduction, J.A. Guerrero. 2. Theoretical Preliminaries, J.A. Guerrero. 3. Multiagent Coordination Strategies, J.A. Guerrero, R. Lozano, M.W. Spong, N. Chopra. 4. Robust Control Design for Multiagent Systems with Parametric Uncertainty, J.A. Guerrero, G. Romero. 5. On Adaptive and Robust Controlled Synchronization of Networked Robotic Systems on Strongly Connected Graphs, Y.-C. Liu, N. Chopra. 6. Modeling and Control of Mini UAV, G. Flores Colunga, J.A. Guerrero, J. Escareño, R. Lozano. 7. Flight Formation Control Strategies for Mini UAVs, J.A. Guerrero. 8. Formation Based on Potential Functions, L. García, A. Dzul. 9. Quadrotor Vision-Based Control, J.E. Gomez-Balderas, J.A. Guerrero, S. SALAZAR, R. Lozano, P. Castillo. 10. Toward Vision-Based Coordination of Quadrotor Platoons, L.R. García Carrillo, J.A. Guerrero, R. Lozano. 11. Optimal Guidance for Rotorcraft Platoon Formation Flying in Wind Fields, J.A. Guerrero, Y. Bestaoui, R. Lozano. 12. Impact of Wireless Medium Access Protocol on the Quadrotor Formation Control, J.A. Guerrero, Y. Challal, P. Castillo. 13. MAC Protocol for Wireless Communications, A. Mendez, M. Panduro, O. Elizarraras, D. Covarrubias. 14. Optimization of a Scannable Pattern for Bidimensional Antenna Arrays to Provide Maximum Performance, A. Reyna, M.A. Panduro, A. Mendez.

Download or read book Smart Autonomous Aircraft written by Yasmina Bestaoui Sebbane and published by CRC Press. This book was released on 2015-11-18 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the extraordinary growth of Unmanned Aerial Vehicles (UAV) in research, military, and commercial contexts, there has been a need for a reference that provides a comprehensive look at the latest research in the area. Filling this void, Smart Autonomous Aircraft: Flight Control and Planning for UAV introduces the advanced methods of flight contr

Download or read book Design and Integration of an Unmanned Aerial Vehicle Navigation System written by Joerg S. Dittrich and published by . This book was released on 2002 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Robust Discrete Time Flight Control of UAV with External Disturbances written by Shuyi Shao and published by Springer Nature. This book was released on 2020-09-26 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book studies selected discrete-time flight control schemes for fixed-wing unmanned aerial vehicle (UAV) systems in the presence of system uncertainties, external disturbances and input saturation. The main contributions of this book for UAV systems are as follows: (i) the proposed integer-order discrete-time control schemes are based on the designed discrete-time disturbance observers (DTDOs) and the neural network (NN); and (ii) the fractional-order discrete-time control schemes are developed by using the fractional-order calculus theory, the NN and the DTDOs. The book offers readers a good understanding of how to establish discrete-time tracking control schemes for fixed-wing UAV systems subject to system uncertainties, external wind disturbances and input saturation. It represents a valuable reference guide for academic research on uncertain UAV systems, and can also support advanced / Ph.D. studies on control theory and engineering.

Download or read book Flight Systems and Control written by Tian Seng Ng and published by Springer. This book was released on 2018-04-13 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on flight vehicles and their navigational systems, discussing different forms of flight structures and their control systems, from fixed wings to rotary crafts. Software simulation enables testing of the hardware without actual implementation, and the flight simulators, mechanics, glider development and navigation systems presented here are suitable for lab-based experimentation studies. It explores laboratory testing of flight navigational sensors, such as the magnetic, acceleration and Global Positioning System (GPS) units, and illustrates the six-axis inertial measurement unit (IMU) instrumentation as well as its data acquisition methodology. The book offers an introduction to the various unmanned aerial vehicle (UAV) systems and their accessories, including the linear quadratic regulator (LQR) method for controlling the rotorcraft. It also describes a Matrix Laboratory (MATLAB) control algorithm that simulates and runs the lab-based 3 degrees of freedom (DOF) helicopter, as well as LabVIEW software used to validate controller design and data acquisition. Lastly, the book explores future developments in aviation techniques.

Download or read book Design and Implementation of an Inertial Navigation System for Real Time Flight of an Unmanned Air Vehicle written by Dimitris Eleftherios Kataras and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unmanned Air Vehicles present increasing benefits to potential users, with their portability, low cost, and simplicity of operation in any battle theater. Work performed at the Naval Postgraduate School on the ARCHYTAS vehicle converges to totally unattached, autonomous flight in all regimes. Control of this inherently unstable platform is achieved by a Stability Augmentation System, designed to provide flight worthy response to pilot commands from a remote ground station. A critical part of this controller is the navigation system, which furnishes imperative data for the controlling process. This thesis examines the successful design and integration of an Inertial Navigation Sensor Suite with the already existing flight controller for the ARCHYTAS. An Inertial Measurement Unit (IMU) is selected from available systems, and the integration process is presented. The research focuses on system requirements, controller modification, IMU-controller interface procedures, and hardware configuration and installation. A radio frequency communication link that transmits data from the airborne lMU to the ground based flight controller is also developed and tested. Evaluation of the design and implementation is provided through laboratory, hardware-in-the-loop tests.

Download or read book Embedded Platforms for UAS Landing Path and Obstacle Detection written by Umberto Papa and published by Springer. This book was released on 2018-01-05 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the design and development of a system that assists remote pilots during the landing procedure. In particular, it covers a previously neglected topic, namely the search for the best pathway and landing site. It describes the system’s components, such as the ultrasonic sensor, infrared sensor and optical sensor, in detail, and discusses the experimental tests carried out in both controlled laboratory and real-world environments. Providing a fascinating survey of the state of the art in the field of unmanned aircraft system electronics design and development, the book also presents recent advances in and cutting-edge methodologies for the development of acquisition systems and inexpensive sensor design for navigation data.

Download or read book Design and Implementation of an Inertial Navigation System for Real Time Flight of an Unmanned Air Vehicle written by Dimitris Eleftherios Kataras and published by . This book was released on 1995 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unmanned Air Vehicles present increasing benefits to potential users, with their portability, low cost, and simplicity of operation in any battle theater. Work performed at the Naval Postgraduate School on the ARCHYTAS vehicle converges to totally unattached, autonomous flight in all regimes. Control of this inherently unstable platform is achieved by a Stability Augmentation System, designed to provide flight worthy response to pilot commands from a remote ground station. A critical part of this controller is the navigation system, which furnishes imperative data for the controlling process. This thesis examines the successful design and integration of an Inertial Navigation Sensor Suite with the already existing flight controller for the ARCHYTAS. An Inertial Measurement Unit (IMU) is selected from available systems, and the integration process is presented. The research focuses on system requirements, controller modification, IMU-controller interface procedures, and hardware configuration and installation. A radio frequency communication link that transmits data from the airborne lMU to the ground based flight controller is also developed and tested. Evaluation of the design and implementation is provided through laboratory, hardware-in-the-loop tests.

Download or read book Nonlinear Control of Fixed Wing UAVs with Time Varying and Unstructured Uncertainties written by Michail G. Michailidis and published by Springer Nature. This book was released on 2020-02-21 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a comprehensive and mathematically rigorous controller design for families of nonlinear systems with time-varying parameters and unstructured uncertainties. Although the presented methodology is general, the specific family of systems considered is the latest, NextGen, unconventional fixed-wing unmanned aircraft with circulation control or morphing wings, or a combination of both. The approach considers various sources of model and parameter uncertainty, while the controller design depends not on a nominal plant model, but instead on a family of admissible plants. In contrast to existing controller designs that consider multiple models and multiple controllers, the proposed approach is based on the ‘one controller fits all models’ within the unstructured uncertainty interval. The book presents a modeling-based analysis and synthesis approach with additive uncertainty weighting functions for accurate realization of the candidate systems. This differs significantly from existing designs in that it is capable of handling time-varying characteristics. This research monograph is suitable for scientists, engineers, researchers and graduate students with a background in control system theory who are interested in complex engineering nonlinear systems.

Download or read book An Optimal Control Approach to Flight Management Systems for Unmanned Aerial Vehicles written by Michael Di Perna and published by . This book was released on 2017 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: With unmanned aerial vehicles (UAVs) becoming increasingly present in military and commercial applications, the flight path efficiency and integration with current manned aircraft become important research topics to address in the coming years. This thesis considers three problems relating to UAVs: the optimal control of a single quadrotor UAV, a multi-agent coverage problem, and a software flight management system which can be used on UAVs.The optimal control problem for a quadrotor UAV is considered with a tuning parameter, the cost index, used in flight management systems to trade-off between time and energy costs. A state-feedback control law is developed and simulation results are presented. A software flight management system (SFMS) using aerospace standard communication protocols is developed and validated with an industry flight simulator. The SFMS allows for the testing of algorithms which can be used on real aircraft (manned or unmanned) without requiring access to a costly commercial flight management system. An energy efficient coverage problem from previous work is considered and extended to include agents with second order dynamics using the backstepping technique. The extension to second order dynamics requires the analysis of the dynamics of Voronoi cells. A geometric interpretation is presented for the change in area and change in position of the center of mass for Voronoi cells. Simulation results are presented comparing the first order and second order agents.

Download or read book In Flight Learning Based Flight Control of an Unmanned Aircraft System written by Mohammed Alabsi and published by . This book was released on 2018 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unmanned Aerial Vehicles (UAVs) popularity has increased substantially in the last few years. UAVs capabilities continue to improve as a result of advances in battery technology, communication, navigation systems and electronics. Increased popularity has driven researchers to improve UAVs reliability and safety which is reflected by the number of publications and accelerating educational programs interest. UAVs are suited for a wide range of civilian and military applications; however, UAVs currently can not integrate with civilian airspace because of stringent safety requirements. Hence, it is necessary to push the envelope for UAVs design and control so that they can learn from nature and have more self-aware capabilities to improve safety and reliability. This dissertation addresses some challenges involved with flight controller learning based on real-time modeling of UAV. Plenty of UAV applications require different operational capabilities within a composite mission. These capabilities include landing and taking off using short runways, while being able to perform missions that require a high cruise speed i.e. tracking applications. A composite mission also requires the aircraft to be able to hover or operate with low cruise speeds for applications involving stationary moments. All of these different operational modes require a hybrid aircraft design that combines fixed wing aircraft capabilities and Vertical Take-Off and Landing (VTOL) aircraft capabilities. However, extensive resources required for hybrid aircraft design prohibited the discovery of different revolutionary designs. The work presented in this dissertation describes the development of a rapid modeling, prototyping and controller design platform of an unmanned quadrotor aircraft. Three main objectives are investigated: intelligent excitation input design, real-time parameter estimation, and learning control. Real-time estimation of dynamic model parameters is important for control adaptation. However, the aircraft model estimation performance can be severely degraded by an active control system and highly collinear model terms such as those found on a quadrotor unmanned aircraft. Recursive Fourier Transform Regression was applied to estimate parameters of different model forms/structures and using different excitation levels. The generated models are utilized to reconfigure a Nonlinear Dynamic Inversion (NDI) controller considering different testing conditions: normal, failure, and learning flights. Finally,an intelligent input design technique is proposed which enables autonomous identification of the vehicle’s response modal frequencies and emphasizes excitation power accordingly.

Download or read book Control of Autonomous Aerial Vehicles written by Andrea L'Afflitto and published by Springer Nature. This book was released on 2023-11-20 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Autonomous Aerial Vehicles is an edited book that provides a single-volume snapshot on the state of the art in the field of control theory applied to the design of autonomous unmanned aerial vehicles (UAVs), aka “drones”, employed in a variety of applications. The homogeneous structure allows the reader to transition seamlessly through results in guidance, navigation, and control of UAVs, according to the canonical classification of the main components of a UAV’s autopilot. Each chapter has been written to assist graduate students and practitioners in the fields of aerospace engineering and control theory. The contributing authors duly present detailed literature reviews, conveying their arguments in a systematic way with the help of diagrams, plots, and algorithms. They showcase the applicability of their results by means of flight tests and numerical simulations, the results of which are discussed in detail. Control of Autonomous Aerial Vehicles will interest readers who are researchers, practitioners or graduate students in control theory, autonomous systems or robotics, or in aerospace, mechanical or electrical engineering.