Piezomagnetic vibration energy harvester with an amplifier

This repository contains results of simulation of the effect of an amplification mechanism in a nonlinear vibration energy harvesting system where a ferromagnetic beam resonator is attached to the vibration source through an additional linear spring with a damper. The beam moves in the nonlinear double-well potential caused by interaction with two magnets. The piezoelectric patches with electrodes attached to the electrical circuit support mechanical energy transduction into electrical power. The results show that the additional spring can improve energy harvesting. By changing its stiffness, we observed various solutions. At the point of the optimal stiffness of the additional spring, the power output is amplified a few times depending on the excitation amplitude.

本仓库包含某非线性振动能量收集系统中放大机制效应的仿真结果：该系统的铁磁梁式谐振器通过带阻尼器的附加线性弹簧与振动源相连。该梁在与两块永磁体相互作用产生的非线性双势阱势场中运动。附着有电极并接入电路的压电贴片可将机械能转导为电功率。仿真结果表明，该附加弹簧可提升振动能量收集效率；通过调整其刚度，可观测到多种稳态解。当附加弹簧刚度处于最优值时，输出电功率可根据激励幅值被放大数倍。