Author: Qishan Wang Publisher: ISBN: Category : Languages : en Pages :
Book Description
"The objective of this dissertation is the vibration and buckling control of piezo-laminated composite structures with surface bonded or embedded piezoelectric sensors and actuators by using the finite element analysis and LQR/LQG feedback control techniques. The focus is mainly on two aspects: the finite element part and the active control part. (1) The finite element part:Two finite element formulations for the piezo-laminated beams based on the classical Bernoulli-Euler and the Timoshenko beam theories are developed using the coupled linear piezoelectric constitutive equations, and the Hamilton variation principle. A C0 continuous, shear flexible, eight-node serendipity doubly curved shell element for the piezo-laminated composite plates and shells is also developed based on the layer-wise shear deformation theory, linear piezoelectric coupled constitutive relations, and Hamilton variation principle. The developed elements can handle the transverse shear strains, composite materials, and piezoelectric-mechanical coupling. Higher modes of vibration can then be predicted more precisely for thin to medium-thick multi-layered composite structures. They are evaluated both for the vibration and buckling of beam, plate, and shell structures. (2) The active control part: The suppression of vibration of a cantilever piezo-laminated beam and the control of the first two buckling modes of a simply supported piezo-laminated beam are studied first. Then, the vibration and buckling control of a cantileverpiezo-laminated composite plate are studied. Furthermore, the vibration control of a piezolaminated semicircular cylindrical shell is also studied. The results of the finite element analysis are used to design a linear quadratic regulator (LQR) controller and a linear quadratic Gaussian (LQG) compensator with a dynamic state observer to achieve all the controls. The control design begins with an approximate reduced modal model which can represent the system dynamics with the least system modes. A state space modal model of the smart structure which integrates the host structure with bonded piezoelectric sensors and actuators, is then used to design the control system. The designed LQR/LQG feedback controls are shown to be successful in suppressing the vibration and stabilizing the buckling modes of structures. Both the finite element analysis and the active control simulation results are consistent with the existing theoretical analysis results and the experimental data in the literature. Some important conclusions and interesting observations are obtained." --
Author: Amr M Baz Publisher: World Scientific ISBN: 1800614144 Category : Technology & Engineering Languages : en Pages : 616
Book Description
This book presents a comprehensive coverage of smart structures, from the basic concepts to a wide spectrum of critical applications, including piezoelectric-based sensors, actuators, and self-sensing actuators. Throughout the book, attempts have been made to develop electrical analogies of the structural/piezoelectric interactions.The book is organized into seven chapters. The first three chapters cover the basic concepts of structural dynamics, control, piezoelectric actuators, and piezoelectric sensors. The following four chapters cover a wide range of important applications in active vibration control, passive shunted piezoelectric networks, comprehensive piezoelectric energy harvesting technology, and piezoelectric-based periodic and metamaterial structures. Every chapter concludes with several problems.
Author: A. Preumont Publisher: Springer Science & Business Media ISBN: 9781402009259 Category : Science Languages : en Pages : 402
Book Description
This book consists of 14 chapters. Chapters 2 and 3 are devoted to the dynamics of active structures; the open loop transfer functions are derived from the constitutive equations; the discussion includes active trusses with piezoelectric struts, and beams and shells with embedded laminar piezoelectric actuators and sensors. Chapters 4 and 5 discuss the virtues of collocated actuator/sensor configurations and how they can be exploited to develop active damping with guaranteed stability. Chapter 6 addresses vibration isolation for one and 6 d.o.f. Chapter 7 discusses optimal control for SISO systems with symmetric root locus. Chapter 8 discusses the design tradeoffs for SISO systems in the frequency domain, including the Bode amplitude/phase relationship. Chapter 9 provides a more general discussion of optimal control using of optimal control using the Riccati equation; spillover is examined. Chapters 10 and 11 review briefly the concepts of controllability, observability and stability. Chapter 12 discusses the semi-active control, including some materials on magneto-rheological fluids. Chapter 13 describes various practical applications to active damping, precision positioning and vibroacoustics, and chapter 14 discusses the active damping of cable- structures.
Author: B. Bandyopadhyay Publisher: Springer ISBN: 3540483942 Category : Technology & Engineering Languages : en Pages : 282
Book Description
This book presents an overview over smart structures - its concepts, its active involvement in the vibration control, their applications and the extensive research work done.
Author: Haim Abramovich Publisher: Walter de Gruyter GmbH & Co KG ISBN: 311072670X Category : Science Languages : en Pages : 494
Book Description
This new edition of our 2016 book provides insight into designing intelligent materials and structures for special application in engineering. Literature is updated throughout and a new chapter on optics fibers has been added. The book discusses simulation and experimental determination of physical material properties, such as piezoelectric effects, shape memory, electro-rheology, and distributed control for vibrations minimization.
Author: Qishan Wang
Author: 
Author: Amr M Baz
Author: A. Preumont
Author: B. Bandyopadhyay
Author: Haim Abramovich
Author: Brian P. Baillargeon
Author: 
Author: Demet Fatma Ülker
Author: Suk-Yoon Hong