Stoppers Energy Harvesting Efficiency Enhancement via Optimal Linear Controller

Resumo

A stoppers solution to enhance energy harvesting imposes a nonlinear behavior to the system and also a chaotic behavior that increase the mechanical energy transferring from excitation source to electric output power. To increase even more energy conversion it was project an Optimal Linear Control to drive the system to a optimize interaction from vibration source to structural system. A piezoelectric film is attached to a cantilever beam and an electric output load is assembled to extract electric energy from vibration sourced. The stoppers are arranged to improve the system efficiency. Using the indirect piezoelectric effect a controller will insert velocity and acceleration to the system and as main result the system increased efficiency 1.18 times considering output voltage rate.