A vibration energy harvesting device with bidirectional resonance frequency tunability

VR Challa, MG Prasad, Y Shi… - Smart Materials and …, 2008 - iopscience.iop.org
Vibration energy harvesting is an attractive technique for potential powering of wireless
sensors and low power devices. While the technique can be employed to harvest energy …

Towards an autonomous self-tuning vibration energy harvesting device for wireless sensor network applications

VR Challa, MG Prasad, FT Fisher - Smart Materials and …, 2011 - iopscience.iop.org
Future deployment of wireless sensor networks will ultimately require a self-sustainable
local power source for each sensor, and vibration energy harvesting is a promising …

Tunable resonant frequency power harvesting devices

WJ Wu, YY Chen, BS Lee, JJ He… - Smart structures and …, 2006 - spiedigitallibrary.org
Over the past years, there has been growing interests in the field of power harvesting
technologies for low-power electronic devices such as wireless sensor networks and …

A self-tuning resonator for vibration energy harvesting

NA Aboulfotoh, MH Arafa, SM Megahed - Sensors and Actuators A …, 2013 - Elsevier
This work is concerned with developing a vibration-based energy harvester with a tunable
natural frequency. The harvester is designed to automatically adjust its own natural …

A parametric resonator with low threshold excitation for vibration energy harvesting

W Yang, S Towfighian - Journal of Sound and Vibration, 2019 - Elsevier
A parametric resonator for vibration energy harvesting is presented. Despite large
responses from parametric resonance, two major drawbacks of parametric resonance …

The magnetic coupling of a piezoelectric cantilever for enhanced energy harvesting efficiency

JT Lin, B Lee, B Alphenaar - Smart materials and Structures, 2010 - iopscience.iop.org
It is shown that the energy harvesting capabilities of a piezoelectric cantilever can be
enhanced through coupling to a static magnetic field. A permanent magnet is fixed to the …

A coupled piezoelectric–electromagnetic energy harvesting technique for achieving increased power output through damping matching

VR Challa, MG Prasad, FT Fisher - Smart materials and …, 2009 - iopscience.iop.org
Vibration energy harvesting is being pursued as a means to power wireless sensors and
ultra-low power autonomous devices. From a design standpoint, matching the electrical …

Tuning a resonant energy harvester using a generalized electrical load

A Cammarano, SG Burrow, DAW Barton… - Smart Materials and …, 2010 - iopscience.iop.org
A fundamental drawback of vibration-based energy harvesters is that they typically feature a
resonant mass/spring mechanical system to amplify the small source vibrations; the limited …

Modeling and analysis of piezoelectric cantilever-pendulum system for multi-directional energy harvesting

J Xu, J Tang - Journal of Intelligent Material Systems and …, 2017 - journals.sagepub.com
Piezoelectric cantilevers are widely used in vibration energy harvesting. Simple cantilever-
based harvesters are mostly unidirectional. In this article, we develop a cantilever-pendulum …

A closed-loop wide-range tunable mechanical resonator for energy harvesting systems

C Peters, D Maurath, W Schock… - Journal of …, 2009 - iopscience.iop.org
This paper presents a novel electrically tunable structure which can be used as a resonator
for vibration-based energy harvesters. The adjustment of the resonance frequency is …