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 …

The recent years have witnessed a wealth of research on energy harvesting technologies.
To maximize the output power, vibration-based energy harvesters are normally designed to …

Self-adaptive vibration energy harvesters convert the kinetic energy from vibration sources
into electrical energy and continuously adapt their resonance frequency to the vibration …

This paper reports on a self-adaptive energy harvesting system, which is able to adapt its
eigenfrequency to the operating conditions of power units. The power required for frequency …

This paper describes the development and implementation of a self powered control system
that autonomously adapts the resonant frequency of an electromagnetic vibration-based …

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 …

Most vibration energy harvesters use conventional cantilever configuration and typically
perform well for a specific frequency at the first resonant mode, this makes the devices less …

This paper presents a vibration-based electromagnetic energy harvester whose resonance
frequency can be adjusted to match that of the excitation. Frequency adjustment is attained …

This article presents a non-resonant magneto-mechanical vibration energy harvester. When
externally excited, the energy harvester converts vibrations into electric charge using a …

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 …