摘要
压电陶瓷能将弹药发射环境中的机械能转换为电能,压电电源就是基于此特性为引信供电的环境能源。提出一种压电发电建模方法,利用其对引信压电电源的发电特性进行了理论研究。共包括两个步骤:利用总能量求偏导法推导出并联压电叠堆产生的电压、电荷及电能公式;将压电结构发电模型等效为电路形式,利用电路知识分析得到压电电源的电能输出表达式。然后利用MATLAB软件进行了数值仿真分析,最后以所得理论模型为指导、以最大化提高发电量为目的进行压电电源的设计。
Piezoelectric ceramic can transfer mechanical energy around projectile launch environment into electrical energy. A new model building method is proposed to study the electric generating characteristic of piezoelectric power supply. The method includes two steps： first, deduce the formulas of output voltage, electric charge and electric energy of parallel connected piezoelectric stack through total energy partial differentiation method; second, transform the generating model of piezoelectric structure to equivalent circuit, and the final electric energy output expressions can be obtained through electricity analysis. Then utilize MATLAB to proceed numerical analysis for the new model of piezoelectric generation, finally a piezoelectric power supply is designed to optimize its electric energy production with the theoretical model.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第B04期292-294,305,共4页
Journal of Functional Materials
关键词
压电陶瓷
压电效应
引信
电源
建模
piezoelectric ceramic
piezoelectric effect
fuze
power supply
model building
