Dynamics and Control of Structures : A Modal Approach

Wodek K Gawronski

ISBN 10: 0387985271 / ISBN 13: 9780387985275

Editore: Springer New York Sep 1998, 1998

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Neuware - Robots, aerospace structures, active earthquake-damping devices of tall buildings, and active sound suppression are examples of the application of structural dynamics and control methods. This book addresses the structural dynamics and control problems encountered by mechanical, civil, and control engineers. Many problems presented in this book originated in recent applications in the aerospace industry, and have been solved using the approach presented here. Dynamics analysis and controller design for flexible structures require a special approach due to the large size of structural models, and because flexible structure testing and control typically requires massive instrumentation (sensors and actuators). But the rapid development of new technologies and the increased power of computers allows for the formulation and solution of engineering problems that seemed to be unapproachable not so very long ago. The modal approach was chosen in this book. It has a long tradition in structural engineering (see, e.g., [84], [87], and [26]) and is also used in control system analysis, e.g., [93]. Its usefulness, thoroughly tested, does not need extensive justification. Both structural testing and analysis give priority to the modal representation, due to its compactness, simplicity, and explicit physical interpretation. Also, many useful structural properties are properly exposed only in modal coordinates. In this book the modal approach, preferred by structural engineers, is extended into control engineering, giving new analytical results, and narrowing the gap between structural and control analysis. Codice articolo 9780387985275

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Titolo: Dynamics and Control of Structures : A Modal...

Casa editrice: Springer New York Sep 1998

Data di pubblicazione: 1998

Legatura: Buch

Condizione: Neu

Descrizione articolo

Riassunto:

This book addresses problems in structural dynamics and control encountered in applications such as robotics, aerospace structures, earthquake-damage prevention, and active noise suppression. The rapid developments of new technologies and computational power have made it possible to formulate and solve engineering problems that seemed unapproachable only a few years ago. This presentation combines concepts from control engineering (such as system norms and controllability) and structural engineering (such as modal properties and models), thereby revealing new structural properties as well as giving new insight into well-known laws. This book will assist engineers in designing control systems and dealing with the complexities of structural dynamics.

Contenuti:

1. Dynamics.- 1 Introduction.- 2 Models.- 3 Controllability and Observability.- 4 Norms.- 5 Model Reduction.- 6 Assignment.- 7 Actuator and Sensor Placement.- 2. Control.- 8 Dissipative Controllers.- 9 LQG Controllers.- 10 H? and H2 Controllers.- Appendix A Matlab Functions.- A.1 Transformation to the Modal Representation.- A.2 Open-Loop Balanced Representation.- A.5 Hankel Modal Norm.- A.6 LQG Balanced Representation.- Appendix B Structural Parameters.- B.1 Stiffness and Mass Matrices of the 2D Truss.- B.2 State-Space Representation of the Deep Space Network Antenna.- References.