摘要
为提高单层PVDF压电薄膜在外载荷作用下的输出电压,通过增加PVDF压电薄膜的层数和改变PVDF压电薄膜的电气连接方式,研究了阶跃载荷下多层PVDF压电薄膜串联和并联两种情况下的输出电压及其响应时间。建立了多层PVDF压电薄膜在d33模式下串联、并联的电压输出理论模型。通过仿真软件绘制了单位阶跃载荷下串联与并联的多层压电薄膜电压输出曲线,并通过实验验证了模型的有效性。仿真和实验结果表明,串联方式和并联方式都可以提高压电薄膜的电压输出,但串联连接方式的效果更加明显。在串联连接的情况下,响应时间随着层数增加而减小,并联情况下,层数的增加对响应时间的影响较小;相同层数下,采用串联方式的多层压电薄膜输出电压比并联方式大。
To improve the output voltage of single layer PVDF piezo-film under external load,a method increasing layers of PVDF piezoelectric films and changing electrical connection mode is presented. The output voltage and response time of multilayer PVDF piezofilms in series and in parallel under unit step load are investigated. The theory model of multilayer PVDF piezo-films in series and in parallel is built. The output voltage curves of multilayer PVDF piezo-films in series and in parallel are painted by the simulation software. The experiments were carried out to verify the effectiveness of the proposed model. The simulation and experimental results indicate that the output voltage of multilayer PVDF piezoelectric films in parallel or in series increases with the number of layer.Multilayer PVDF piezoelectric films in series have a demonstrable effect. The response time decreases with the number of layer in series while minor effect of response time in parallel. The multilayer PVDF piezo-films in series can produce larger output voltage when equaling the number of layers.
出处
《电子测量与仪器学报》
CSCD
北大核心
2018年第1期201-208,共8页
Journal of Electronic Measurement and Instrumentation
