Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/64203
Title: Improvement of bandwidth of a vibration based piezoelectric energy harvester using a passive-tuning method
Authors: Liu, Pei Wen
Keywords: DRNTU::Engineering::Civil engineering::Structures and design
Issue Date: 2015
Abstract: Over the past decades, development of portable electronics has invoked the possibility of harvesting energy from the ambient environment for self-powered systems. One of the popular methods is to harvest energy from the ambient vibrations. The vibrations occurring in the immediate surroundings are seldom of a constant frequency. Thus, there is a need for vibration energy harvesters to efficiently tap this broadened bandwidth of frequency. This work consists of the study of a beam-mass system of piezoelectric energy harvester (PEH), based on the concept of passive self-tuning resonator for broadband power harvesting. This nonlinear harvester is developed from the linear counterpart by incorporating a sliding mass at the tip of the beam. Experimental parametric study is carried out to investigate the behavior of the proposed design for its enhanced applicability. A thorough experimental investigation consisting of a study of the linear and nonlinear cases is performed with varying lengths of the slider mass and thickness of the vibration PEH beam.
URI: http://hdl.handle.net/10356/64203
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)

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