R S Kattimani, P V Malaji, S S Chappar and S Adhikari
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引用次数: 0
Abstract
Achieving higher power output across a broader frequency spectrum presents a significant challenge for vibration energy harvesters aimed at powering low-powered devices from ambient sources. This study introduces the novel concept of employing inertial amplifiers to couple mistuned pendulum electromagnetic harvesters for enhanced energy harvesting performance. A mathematical model elucidating the inertial amplifier mechanism is developed, and analytical results are compared against conventional uncoupled harvesters. Experimental studies demonstrated up to 1.8 times higher power output and a 2-fold increase in operational frequency bandwidth compared to uncoupled harvesters when employing inertial amplifier coupling. The proposed inertially coupled harvester design offers a powerful solution to significantly improve energy transduction levels and extend the viable frequency range, enabling efficient scavenging of ambient vibrations for powering wireless sensors and low-power electronics.
期刊介绍：
Smart Materials and Structures (SMS) is a multi-disciplinary engineering journal that explores the creation and utilization of novel forms of transduction. It is a leading journal in the area of smart materials and structures, publishing the most important results from different regions of the world, largely from Asia, Europe and North America. The results may be as disparate as the development of new materials and active composite systems, derived using theoretical predictions to complex structural systems, which generate new capabilities by incorporating enabling new smart material transducers. The theoretical predictions are usually accompanied with experimental verification, characterizing the performance of new structures and devices. These systems are examined from the nanoscale to the macroscopic. SMS has a Board of Associate Editors who are specialists in a multitude of areas, ensuring that reviews are fast, fair and performed by experts in all sub-disciplines of smart materials, systems and structures.
A smart material is defined as any material that is capable of being controlled such that its response and properties change under a stimulus. A smart structure or system is capable of reacting to stimuli or the environment in a prescribed manner. SMS is committed to understanding, expanding and dissemination of knowledge in this subject matter.
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