有色噪声激励下双稳态电磁式振动能量捕获器动力学特性研究

随着微机电科技的进步，利用环境振动进行系统自供电已经成为目前非线性动力学研究的热点.以附加线性振子的双稳态电磁式振动能量捕获器为研究对象，建立系统的动力学方程，通过数值仿真研究了有色噪声激励作用下双稳态能量捕获系统的动力学行为，分别从有色噪声强度、质量比和调频比3个方面研究了双稳态系统动力学响应，获得了上述参数对双稳态能量捕获系统动力学特性的影响规律，上述研究结果为双稳态电磁式振动能量捕获系统的相关研究提供理论基础.

Dynamic Characteristics of Bistable Electromagnetic Vibration Energy Harvesters Under Colored Noise Excitation

With the progress of MEMS technology,it is possible to power the sensor system by means of the electricity produced by the vibration energy harvester.The vibration energy harvesting technology based on environment vibration has become a hot topic for the study of nonlinear dynamics.The bistable electromagnetic vibration energy harvester with an auxiliary linear oscillator was studied.The dynamic equations under colored noise were established.The dynamic characteristics of the bistable vibration energy harvester excited by colored noise were studied through numeric simulation for varying parameters including the noise intensity,the mass ratio and the tuning ratio.The influencing law of the noise intensity,the mass ratio and the tuning ratio was obtained.The research results provide a theoretical basis for the further study of bistable electromagnetic vibration energy harvesters.