Broadband vibration energy harvesters have been extensively investigated as clean and
sustainable power sources for low-power applications installed in harsh and off-grid …

Ultra-low frequency vibrations in the ambient environment contain abundant sustainable
energy. However, their time-varying and random direction nature poses a prominent …

This paper presents a constrained model-free tuning algorithm for vibration energy
harvesters. Ideally, a vibration energy harvester should operate such that it can absorb the …

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 …

Inertial vibration energy harvesters are effective only when they operate at their natural
frequencies. A slight deviation from operation at resonance conditions leads to a substantial …

This work presents a spring-assisted multi-stable nonlinear vibration energy harvesting
technique by integrating two working mechanisms (ie, electromagnetic and triboelectric …

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

Prior research has investigated resonators capable of self-tuning through the use of a sliding
mass. This passive tuning mechanism can be utilized to improve vibration control; however …

In this paper, we present a novel vibration-based piezoelectric energy harvester, capable of
collecting power at multiple operating frequencies and autonomously adapting itself to the …

A new control strategy for sliding-mode extremum seeking in two-variables is proposed in
this study. The controller converts the two-variable search problem into a single-variable …