Год выпуска: 2013 Автор: Sutrisno W. Ibrahim and Wahied G. Ali Abdelaal Издательство: LAP Lambert Academic Publishing Страниц: 124 ISBN: 9783659336645
Описание
Piezoelectric energy harvesting technologies have received a great attention during the last decade to design self-powered microelectronic devices such as wireless sensor nodes (WSN). Piezoelectric energy harvester (PEH) produces maximum power when its natural frequency closely matches the excitation vibration frequency. In most of real-time applications, frequency of the vibration source is not constant but it is time-varying. Hence, the piezoelectric energy harvester has to be “self tunable” in order to guarantee that its natural frequency closely matches with the excitation frequency. Different tuning methods are surveyed and analyzed intensively in this book. A lumped dynamic model for a piezoelectric cantilever is developed using parametric identification to simply build up the equivalent circuit. Power analysis for the energy harvester is developed to investigate the necessary conditions for the maximum power transfer. A self-tunable piezoelectric energy harvester using servo...
