There are several solutions to enhance energy harvesting efficiency and is highlighted as the most promised state of the art research the active control driven for increase mechanical energy transformation from vibration to electric energy. The control driven uses the impulse to curt circuit the piezoelectric film and takes advantage of piezoelectric indirect effect. The controller changes the relative stiffness, damping and mass of the studied system and consequently changes the system natural frequency. It is imposed velocity and acceleration to the system to combine the exogenous excitation to system parameters and resulting in maximum mechanical energy transfer. 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. This work presents a initial results of a numeric study from energy harvesting coupled to a optimal linear control project to enhance energy harvesting system efficiency.