【摘要】 建立了Cymbal压电发电机发电系统,设计了DC-DC型能量存储电路并进行了压电发电性能研究。同时实验研究了占空比、电感等参数对压电发电性能的影响。研究结果表明,占空比这个DC-DC电路中的重要参数存在一个最佳值,使得负载的输出功率达到最大。在一定范围内电感对负载输出电压的影响不大,但对输出功率的影响比较明显。当占空比为2%、电感为1.5 mH时,压电发电机最大输出功率可达到10.5 mW。由Cymbal压电发电机产生的电能能够满足微型机电系统、网络传感器等低耗能电子产品的供能需求。更多还原

【Abstract】 A piezoelectric generator system with a cymbal transducer was built,a DC-DC energy-storage converter circuit was developed,and the performance of the piezoelectric generator was studied.The effects of duty cycle and inductance on the power generation performance of the system were investigated experimentally.The results showed that the duty cycle is an important parameter in the DC-DC converter circuit,and there is an optimal duty cycle for the maximum power output on the resistive load.The inductance in a certain range has little impact on the output voltage,but has rather obvious effect on the power output.The maximum power output of 10.5 mW can be obtained from the cymbal transducer with duty cycle 2% and inductance 1.5 mH.The power generated in the developed system is enough to supply power to MEMS,such as internet sensor or other low energy consumption electronic systems.更多还原