基于PVDF膜的动态力测量传感器设计
时间:2017-03-21 21:52 来源:毕业论文 作者:毕业论文 点击:次
| 摘要武器系统发射时的后座力以及弹丸撞击靶板的撞击力等都是武器系统研制过程中需要进行测量的重要参量。论文研究了聚合物材料PVDF压电薄膜的压电效应、压电方程与工作模式，分析了夹持结构下PVDF膜的受力情况，讨论了相关的传感器封装方法。采用固定螺栓的封装方法，设计了一种基于PVDF膜的动态力测量用传感器。针对该传感器设计了相应的PVDF膜压电传感器测量电路。设计了RC滤波电路，基于LF356n集成运放设计了电荷放大器，通过反馈电容来实现电荷的放大。组建了传感器实验系统，进行了对比实验和弹丸撞击实验，实验结果表明，该传感器可用于动态力的测量。6742 关键字 PVDF膜 传感器设计 电荷放大器 对比 弹丸撞击 毕业设计说明书（论文）外文摘要 Title Design of dynamic force measurement sensor basing on PVDF film Abstract The Recoil in the launch of the weapon system and the impact force of projectile impact Target are important parameters which need to measuring in the development process of weapon system.This paper studied The piezoelectric effect, piezoelectric equations and the operating mode of the PVDF piezoelectric films of polymer materials,analyzed the forces of the PVDF membrane under the clamping structure,discussed some sensor packaging methods.Using of mounting bolts,I designed a dynamic force measurement sensors based on PVDF films.I designed the PVDF film piezoelectric sensor measurement circuit for this designing.I designed the RC filter and the charge amplifier based on LF356n integrated operational, which could achieve the charge amplification through the feedback capacitors.I set up the sensor experimental system and conducted the contrast experiments and projectile impact experiments.The experimental results showed that this sensor could be used for dynamic force measurement. Keywords PVDF films Design of sensor Charge amplifier Contrast Projectile impact 目 次 7 1 绪论 1 1.1 研究的背景与意义 1 1.2 国内外研究现状 1 1.2.1 PVDF压电薄膜的特性研究 2 1.2.2 PVDF压电传感器的结构研究 2 1.2.3 PVDF膜的应用研究 3 1.3 本课题的主要工作 3 2 传感器设计 4 2.1 PVDF膜特点 4 2.2 PVDF膜的的工作原理 5 2.2.1 压电效应 5 2.2.2 压电方程 6 2.2.3 PVDF膜的工作模式 7 2.3 传感器结构受力分析 7 2.4 结构设计 10 2.5 传感器封装 11 3 测量电路设计 12 3.1 PVDF膜的电路模型 12 3.2 滤波电路设计 14 3.3 电荷放大电路设计 15 4 性能测试与分析 16 4.1对比试验 16 4.2 弹丸撞击实验 19 结 论 22 致 谢 23 (责任编辑：qin) |