CAJ | 학술논문

为了明确自供电式同步开关电感阻尼电路的功率特性,同时为优化开关控制电路提供理论依据,分析了该电路的阻抗特点及其输出功率随负载的变化关系,并研究了在不同激振强度下能量收集的效率。实验测试了压电悬臂梁尖端振幅为2mm及4mm时负载电路获得功率及悬臂梁振子输出的总功率。结果表明,在振幅为2mm时,负载获得的最大输出功率为38.6μW;在振幅为4mm时,最大功率187μW。在压电振子正常工作的振动强度范围内,激振强度越大,自供电式同步开关电感阻尼电路的能量收集效率越高。在200~800kΩ负载范围内,振幅为4mm时的效率比2mm时高10%左右。
위료명학자공전식동보개관전감조니전로적공솔특성,동시위우화개관공제전로제공이론의거,분석료해전로적조항특점급기수출공솔수부재적변화관계,병연구료재불동격진강도하능량수집적효솔。실험측시료압전현비량첨단진폭위2mm급4mm시부재전로획득공솔급현비량진자수출적총공솔。결과표명,재진폭위2mm시,부재획득적최대수출공솔위38.6μW;재진폭위4mm시,최대공솔187μW。재압전진자정상공작적진동강도범위내,격진강도월대,자공전식동보개관전감조니전로적능량수집효솔월고。재200~800kΩ부재범위내,진폭위4mm시적효솔비2mm시고10%좌우。
To provide an analytical understanding of the power characteristic of so-called self-powered synchronized switch damping on inductor, the theoretical analysis of its impedance and output power in different load resistance was proposed. The output power of load resistance and the total power of cantilever piezoelectric energy harvester were tested respectively with the cantilever tip amplitude 2mm and 4ram. The results showed that the maximum output power of load resistance is 38.6 p,W and 187 ~W respectively, meanwhile, the higher the excitation level is, the higher energy harvesting efiiciency of self-powered synchronized switch damping on inductor circuit would come under the normal vibration strength condition. Within the range of commonly used load resistance 200 k~800 kl~, the eftlciency in 4mm was 10% higher than that in 2ram.