摘要
分析钢球和压电悬臂梁之间的碰撞过程,通过压电振子等效电路模型计算与实验数据分析,研究基于PMNT与PZT两种不同材料的悬臂梁压电能量收集器的输入机械冲击能量和输出电能之间的关系,分析各自机电转换效率受机电耦合系数的影响规律,采用钢球下落撞击悬臂梁结构压电振子的方式实现机械能到电能的转换.
The impact process of the steel ball and the cantilever structure was analyzed. The relationshipbetween the output electrical energy and input mechanical energy based on cantilever piezoelectric energyharvester of two various materials of PMNT and PZT was investigated by piezoelectric oscillator equivalentcircuit model calculations and experimental data. The influence of coupling coefficient on electromechanicalconversion efficiency was also analyzed. The conversion of mechanical energy into electrical energy wasrealized by a steel ball free-falling and impacting the cantilever structure.
出处
《湖北大学学报（自然科学版）》
CAS
2015年第5期451-455,共5页
Journal of Hubei University：Natural Science
基金
国家自然科学基金(61274073)资助
关键词
能量收集
压电振子
悬臂梁
转换效率
energy harvest
piezoelectric vibrator
structure of cantilever beam
conversion efficiency
