Abstract
In recent years, the energy harvester is becoming more and more diversified, its aim is to increase the output power, the model of bistable electromagnetic vibration energy harvester with an auxiliary nonlinear oscillator through combining the mass-spring-damper system and a conventional bistable electromagnetic vibration energy harvester is first proposed, the bistable, nonlinear and two degrees of freedom of the system are simultaneously achieved, and the dimensionless governing equations of the system are established. Building white noise excitation signal, the effects of noise intensity, mass ratio and frequency ratio to the dynamic behavior and root mean square power of the system are studied respectively by matlab numerical simulation, the influences of these changing parameters are obtained. The research results can provide a theoretical basis for the related researches of bistable electromagnetic vibration energy harvester system.
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