Read more
Informationen zum Autor Ashish Tewari is a Professor of Aerospace Engineering at the Indian Institute of Technology, Kanpur. He specializes in Flight Mechanics and Control, and is the single author of five previous books, including Aeroservoelasticity - Modeling and Control (Birkhäuser, Boston, 2015) and Advanced Control of Aircraft, Spacecraft, and Rockets (Wiley, Chichester, 2011). He is also the author of several research papers in aircraft and spacecraft dynamics and control systems. He is an Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA), and a Senior Member of the Institution of Electrical and Electronics Engineers (IEEE). Prof. Tewari holds Ph.D. and M.S. degrees in Aerospace Engineering from the University of Missouri-Rolla, and a B.Tech. degree in Aeronautical Engineering from the Indian Institute of Technology, Kanpur. Klappentext This is the first book on adaptive aeroservoelasticity and it presents the nonlinear and recursive techniques for adaptively controlling the uncertain aeroelastic dynamics* Covers both linear and nonlinear control methods in a comprehensive manner* Mathematical presentation of adaptive control concepts is rigorous* Several novel applications of adaptive control presented here are not to be found in other literature on the topic* Many realistic design examples are covered, ranging from adaptive flutter suppression of wings to the adaptive control of transonic limit-cycle oscillations Zusammenfassung This is the first book on adaptive aeroservoelasticity and it presents the nonlinear and recursive techniques for adaptively controlling the uncertain aeroelastic dynamics* Covers both linear and nonlinear control methods in a comprehensive manner* Mathematical presentation of adaptive control concepts is rigorous* Several novel applications of adaptive control presented here are not to be found in other literature on the topic* Many realistic design examples are covered! ranging from adaptive flutter suppression of wings to the adaptive control of transonic limit-cycle oscillations Inhaltsverzeichnis About the Author xv Series Editor's Preface xvii Preface xix 1 Introduction 1 1.1 Aeroservoelasticity 1 1.2 Unsteady Aerodynamics 4 1.3 Linear Feedback Design 7 1.4 Parametric Uncertainty and Variation 11 1.5 Adaptive Control Design 13 1.5.1 Adaptive Control Laws 15 1.6 Organization 20 References 21 2 Linear Control Systems 23 2.1 Notation 23 2.2 Basic Control Concepts 23 2.3 Input-Output Representation 26 2.3.1 Gain and Stability 26 2.3.2 Small Gain Theorem 27 2.4 Input-Output Linear Systems 28 2.4.1 Laplace Transform and Transfer Function 30 2.5 Loop Shaping of Linear Control Systems 33 2.5.1 Nyquist Theorem 34 2.5.2 Gain and Phase Margins 36 2.5.3 Loop Shaping for Single Variable Systems 38 2.5.4 Singular Values 40 2.5.5 Multi-variable Robustness Analysis: Input-Output Model 42 2.6 State-Space Representation 42 2.6.1 State-Space Theory of Linear Systems 43 2.6.2 State Feedback by Eigenstructure Assignment 49 2.6.3 Linear Observers and Output Feedback Compensators 50 2.7 Stochastic Systems 52 2.7.1 Ergodic Processes 57 2.7.2 Filtering of Random Noise 59 2.7.3 Wiener Filter 60 2.7.4 Kalman Filter 61 2.8 Optimal Control 65 2.8.1 Euler-Lagrange Equations 65 2.8.2 Linear, Quadratic Optimal Control 67 2.9 Robust Control Design by LQG/LTR Synthesis 71 2.10 H2/H¿ Design 77 2.10.1 H2 Design Procedure 79 2.10.2 H¿ Design Procedure 80 2.11 ¿-Synthesis 81 2.11.1 Linear Fractional Transformation 83 References 86 3 Aeroelastic Modelling 87 3.1 Structur...
