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Flight Dynamics and System Identification for Modern Feedback Control

Book Description

Unmanned air vehicles are becoming increasingly popular alternatives for private applications which include, but are not limited to, fire fighting, search and rescue, atmospheric data collection, and crop surveys, to name a few. Among these vehicles are avian-inspired, flapping-wing designs, which are safe to operate near humans and are required to carry payloads while achieving manoeuverability and agility in low speed flight. Conventional methods and tools fall short of achieving the desired performance metrics and requirements of such craft. Flight dynamics and system identification for modern feedback control provides an in-depth study of the difficulties associated with achieving controlled performance in flapping-wing, avian-inspired flight, and a new model paradigm is derived using analytical and experimental methods, with which a controls designer may then apply familiar tools. This title consists of eight chapters and covers flapping-wing aircraft and flight dynamics, before looking at nonlinear, multibody modelling as well as flight testing and instrumentation. Later chapters examine system identification from flight test data, feedback control and linearization.

  • Presents experimental flight data for validation and verification of modelled dynamics, thus illustrating the deficiencies and difficulties associated with modelling flapping-wing flight
  • Derives a new flight dynamics model needed to model avian-inspired vehicles, based on nonlinear multibody dynamics
  • Extracts aerodynamic models of flapping flight from experimental flight data and system identification techniques

Table of Contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Dedication
  6. List of figures
  7. List of tables
  8. Nomenclature
  9. Preface
  10. About the authors
  11. Chapter 1: Introduction
    1. Abstract:
    2. 1.1 Background and motivation
    3. 1.2 Bio-inspired flapping wing aircraft
    4. 1.3 Flapping-wing literature review
    5. 1.4 Scope and contributions of current research
  12. Chapter 2: Ornithopter test platform characterizations
    1. Abstract:
    2. 2.1 Mathematical representation of an aircraft
    3. 2.2 Ornithopter aircraft description
    4. 2.3 Measurements from flight data
    5. 2.4 Configuration-dependent mass distribution
    6. 2.5 Quasi-hover aerodynamics
    7. 2.6 Implications for flight dynamics modeling
    8. 2.7 Chapter summary
  13. Chapter 3: Rigid multibody vehicle dynamics
    1. Abstract:
    2. 3.1 Model configuration
    3. 3.2 Kinematic equations of motion
    4. 3.3 Dynamic equations of motion
    5. 3.4 Chapter summary
  14. Chapter 4: System identification of aerodynamic models
    1. Abstract:
    2. 4.1 System identification method
    3. 4.2 Tail aerodynamics
    4. 4.3 Wing aerodynamics
    5. 4.4 Chapter summary
  15. Chapter 5: Simulation results
    1. Abstract:
    2. 5.1 Software simulation architecture
    3. 5.2 Determining trim solutions
    4. 5.3 Numerical linearization about straight and level mean flight
    5. 5.4 Modeling implications for control
    6. 5.5 Chapter summary
  16. Chapter 6: Concluding remarks
    1. Abstract:
    2. 6.1 Summary of work
    3. 6.2 Summary of modeling assumptions
    4. 6.3 Summary of original contributions
    5. 6.4 Recommendations for future research
  17. Appendix A: Field calibration of inertial measurement units
  18. Appendix B: Actuator dynamics system identification
  19. Appendix C: Equations of motion for single-body flight vehicles
  20. Appendix D: Linearization of a conventional aircraft model
  21. References
  22. Index