Linear Matrix Inequalities Control Driven Applied to Bimorph Piezoelectric Energy Harvesting

Abstract

Harnessing energy from environment requires maximum interaction between harvesters and energy power source. Since available energy in natural system is random and small power, harvester must increase their capability. Is known that resonant solution for energy harvesting devices can improve their performance, however projects are limited for a small time matching natural frequency offered from environment vibration. To enhance energy harvesting result it is propose a controller to driven harvester to maximum vibration interaction to the power source. This study is based in numerical evaluation. The proposed controller regards Linear Matrix Inequalities (LMI) H∞ approach. As main result it is noted a considerable increase of system vibration energy available for harvesting.