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| Author | : Jonathan Thomas Jones |
| Publisher | : |
| Total Pages | : 120 |
| Release | : 1999 |
| Genre | : Electronic apparatus and appliances |
| ISBN | : |
| Author | : Alper Erturk |
| Publisher | : John Wiley & Sons |
| Total Pages | : 377 |
| Release | : 2011-04-04 |
| Genre | : Technology & Engineering |
| ISBN | : 1119991358 |
The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.
| Author | : Kenji Uchino |
| Publisher | : CRC Press |
| Total Pages | : 351 |
| Release | : 2020-09-09 |
| Genre | : Technology & Engineering |
| ISBN | : 1000172678 |
As one of the pioneers of "Piezoelectric Actuators", I have contributed to the commercialization of various products for over 45 years, including million-selling devices, micro-ultrasonic motors for smart-phone camera modules by Samsung Electromechanics, piezoelectric transformers for backlight inverters by Apple laptops, multilayer PZT actuators for diesel injection valves by Denso Corporation, and piezoelectric energy harvesting modules for Programable Air-Burst Munition by the US Army. During the development period for "piezoelectric actuators and transformers," I found that the bottleneck for device miniaturization was heat generation under a high-power drive condition. Thus, in parallel to the piezo-actuator developments, I have been developing various high-power density piezo-ceramic materials with the loss mechanism clarification. Hence, I considered that it was time to organize a textbook based on the previous studies, including my materials development philosophy to stimulate younger generations to reach to the energy density of up to 100 W/cm3 in the future. Increasing efficiency and saving energy and space (compactness) are one of the important approaches in this 21st-century "sustainable society." High-Power Piezoelectrics and Loss Mechanisims introduces the theoretical background of piezoelectrics, electromechanical phenomenology, loss mechanisms, practical materials, device designs, drive and characterization techniques, and typical applications, and looks forward to the future perspectives in this field. This book is NOT an overall review of this area, but it focuses on important and basic ideas under my development philosophy to understand how to design and develop high-power piezoelectric materials and devices. This textbook is designed for self-learning by the reader aided by the availability of: • Chapter Essentials – Summary for quick memory recovery • Check Points – Answers are provided in the Appendix • Example Problems – To enhance the reader’s understanding with full, detailed solutions • Chapter Problems – For the final exam or further consideration
| Author | : G.R Tomlinson |
| Publisher | : CRC Press |
| Total Pages | : 858 |
| Release | : 1998-01-01 |
| Genre | : Technology & Engineering |
| ISBN | : 9780750305471 |
Significant changes have occurred in materials science, including increasing demands on life extensions, and the reliability and exploitability of components, materials, and structures. These changes provide smart technologies with excellent application opportunities in aerospace, civil and electrical engineering, transportation, manufacturing, communications, defense, and medicine. Smart Materials and Structures presents an overview of current developments in the characterization and applications of materials and actuators, issues surrounding their control, and the integration of smart systems and technologies. This compendium provides a valuable synopsis of this rapidly expanding and topical research field for engineers, program managers, technologists, physicists, materials scientists, and mathematicians working to advance smart materials, research methods, their applications, and robotic technologies.
| Author | : Christoph Rindfleisch |
| Publisher | : Springer Nature |
| Total Pages | : 256 |
| Release | : |
| Genre | : |
| ISBN | : 3031608208 |
| Author | : Sanghyeon Park |
| Publisher | : |
| Total Pages | : |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
High voltage power supplies are essential in scientific, medical, environmental, security, and robotics fields. The size and weight of the circuit often limit the portability of the system and the range of applications. Smaller, faster, and more efficient power supplies will enable new scientific and commercial advances. My thesis presents circuit techniques to improve the performance of high voltage dc generators. A traditional way of generating a high dc voltage involves a step-up transformer built with a bulky magnetic core and a Cockcroft-Walton voltage multiplier, assembled on an FR4 printed circuit board and sometimes potted in insulating epoxy. Recently, many advances are being made in wide-bandgap semiconductor devices, sub-millimeter size passive components, and high-frequency circuit design methodologies. Those technological developments enable new techniques to design a high voltage power supply. This dissertation presents several new ways to build a high voltage dc generator: a planar PCB transformer that simplifies high-voltage isolation transformer design, a new voltage multiplier topology that exhibits less output voltage drop than the traditional Cockcroft-Walton multiplier, and foldable converters assembled on a flexible PCB to miniaturize kilovolts-level power supplies down to the sub-centimeter scale. My dissertation includes the motivation for investigating each of those circuit techniques and relevant power supply designs as well as application examples. I experimentally validate that by using those techniques appropriately, one can build a smaller and lighter power supply that exceeds traditional boundaries of high voltage generator performance.
| Author | : Ashot Melkonyan |
| Publisher | : kassel university press GmbH |
| Total Pages | : 159 |
| Release | : 2007 |
| Genre | : |
| ISBN | : 3899583027 |
| Author | : Toru Tanzawa |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 196 |
| Release | : 2012-11-28 |
| Genre | : Technology & Engineering |
| ISBN | : 1461438497 |
This book provides various design techniques for switched-capacitor on-chip high-voltage generators, including charge pump circuits, regulators, level shifters, references, and oscillators. Readers will see these techniques applied to system design in order to address the challenge of how the on-chip high-voltage generator is designed for Flash memories, LCD drivers, and other semiconductor devices to optimize the entire circuit area and power efficiency with a low voltage supply, while minimizing the cost.
| Author | : Lee |
| Publisher | : CRC Press |
| Total Pages | : 550 |
| Release | : 1993-02-23 |
| Genre | : Technology & Engineering |
| ISBN | : 9780824788032 |
This comprehensive reference/text explains the development and principles of operation, modelling, and analysis of switch-mode power supplies (SMPS)-highlighting conversion efficiency, size, and steady state/transient regulation characteristics.;Covering the practical design techniques of SMPS,this book - reveals how to develop specific models of circuits and components for simulation and design purposes; explains both the computer simulation of the switching behaviours of dc-to-dc converters and the modelling of linear and nonlinear circuit components; deals with the modelling and simulation of the low-frequency behaviours of converters (including current-controlled converters and converters with multiple outputs) and regulators; describes computer-aided design (CAD) techniques as applied to converters and regulators; introduces the principles and design of quasi-resonant and resonant converters; provides details on SPICE, a circuit simulator package used to calculate electrical circuit behaviour.;Containing over 1000 helpful drawings, equations, and tables, this is a valuable reference for circuit design, electrical, and electronics engineers, and serves as an excellent text for upper-level undergraduate and graduate students in these disciplines.
| Author | : Toru Tanzawa |
| Publisher | : Springer |
| Total Pages | : 254 |
| Release | : 2016-08-23 |
| Genre | : Technology & Engineering |
| ISBN | : 9783319371030 |
This book provides various design techniques for switched-capacitor on-chip high-voltage generators, including charge pump circuits, regulators, level shifters, references, and oscillators. Readers will see these techniques applied to system design in order to address the challenge of how the on-chip high-voltage generator is designed for Flash memories, LCD drivers, and other semiconductor devices to optimize the entire circuit area and power efficiency with a low voltage supply, while minimizing the cost. This new edition includes a variety of useful updates, including coverage of power efficiency and comprehensive optimization methodologies for DC-DC voltage multipliers, modeling of extremely low voltage Dickson charge pumps, and modeling and optimum design of AC-DC switched-capacitor multipliers for energy harvesting and power transfer for RFID.
