Active Control of Structures (PDF)

About the Authors. Preface. Acknowledgements. 1 Active Damping. 1.1 Introduction. 1.2 Structural Control. 1.3 Plant Description. 1.4 Equations of Structural Dynamics. 1.5 Collocated Control System. 1.6 Active Damping with Collocated System. 1.7 Decentralized Control with Collocated Pairs. 2 Active Isolation. 2.1 Introduction. 2.2 Relaxation Isolator. 2.3 Sky-hook Damper. 2.4 Force Feedback. 2.5 Six-Axis Isolator. 2.6 Vehicle Active Suspension. 2.7 Semi-Active Suspension. 3 A Comparison of Passive, Active and Hybrid Control. 3.1 Introduction. 3.2 System Description. 3.3 The Dynamic Vibration Absorber. 3.4 Active Mass Damper. 3.5 Hybrid Control. 3.6 Shear Control. 3.7 Force Actuator, Displacement Sensor. 3.8 Displacement Actuator, Force Sensor. 4 Vibration Control Methods and Devices. 4.1 Introduction. 4.2 Classification of Vibration Control Methods. 4.3 Construction of Active Dynamic Absorber. 4.4 Control Devices for Wind Excitation Control in Civil Structures. 4.5 Real Towers Using the Connected Control Method. 4.6 Application of Active Dynamic Absorber for Controlling Vibration of Single-d.o.f. Systems. 4.7 Remarks. 5 Reduced-Order Model for Structural Control. 5.1 Introduction. 5.2 Modeling of Distributed Structures. 5.3 Spillover. 5.4 The Lumped Modeling Method. 5.5 Method of Equivalent Mass Estimation. 5.6 Modeling of Tower-like Structure. 5.7 Modeling of Plate Structures. 5.8 Modeling of a Bridge Tower. 5.9 Robust Vibration Control for Neglected Higher Modes. 5.10 Conclusions. 6 Active Control of Civil Structures. 6.1 Introduction. 6.2 Classification of Structural Control for Buildings. 6.3 Modeling and Vibration Control for Tower Structures. 6.4 Active Vibration Control of Multiple Buildings Connected with Active Control Bridges in Response to Large Earthquakes. 6.5 Vibration Control for Real Triple Towers Using CCM. 6.6 Vibration Control of Bridge Towers Using a Lumped Modeling Approach. 6.7 Conclusion. References. Index.

Andre Preumont was born in 1951. He obtained his PhD from
the University of Liege (Belgium) in 1981 while he was working in
earthquake engineering at Belgonucleaire. In 1985-6, he was
visiting professor in the Aerospace and Ocean Engineering
department at Virginia Tech (USA). He was appointed tot eh chair of
Mechanical Engineering and Robotics of ULB (Universite Libre de
Bruxelles) in 1987. He created the Active Structures Laboratory in
1995. He is also part-time professor at the University of Liege. He
is the author of several books on active vibration control and
random vibration. His current research interests are in
mechatronics, active vibration control, adaptive optics and
precision engineering. He has had visiting positions at UTC,
Compiegne and INSA-Lyon (France).

Kazuto Seto was born in 1938. He graduated from a
doctoral course in Engineering at Tokyo Metropolitan University in
1971 and received a Dr. Eng. degree from Tokyo Metropolitan
University in the Same Year. He worked as an associate professor
and professor in the Department of Mechanical Engineering,National
Defense Academy from 1973 until 1993. From 1993, he worked as a
professor in the Department of Mechanical Engineering, Nihon
University. He retired in 2007 and is now president of
Seto-Vibration Control Laboratory. He retired in 2007 and is now
president of Society of Mechanical Engineers (JSME) and a fellow of
IE Australia. He was given JSME Awards for his research in 1984 and
1989, and the Dynamics, Measurement and Control Award from JSME in
1994 and 1996. His research interests in the areas of structural
vibration control, system modeling and identification, motion and
vibration control for multistructural systems with multi-controlled
modes.

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