Li Yingjun, Yang Zhikang, Wang Guicong, Yang Cong
School of Mechanical Engineering, University of Jinan, Jinan, 250022, PR China.
School of Mechanical Engineering, University of Jinan, Jinan, 250022, PR China.
ISA Trans. 2020 Sep;104:382-392. doi: 10.1016/j.isatra.2020.05.018. Epub 2020 May 13.
The paper presents piezoelectric pressure sensor to measure the dynamic pressure of explosive shock wave in real time. Crystal group structural layout with acceleration compensation is designed by adding mass blocks. The static and dynamic model of the sensor is established to calculate the sensitivity and natural frequency. The influence of structural parameters of the sensor on its static and dynamic characteristics is analyzed. The mapping relationship between input and output of the sensor under different pressure loads is obtained by simulation. Prototype of the sensor under shock wave load is fabricated. Static and dynamic calibration platforms are built to complete calibration experiments. The experimental results show that the sensor can meet the measurement requirements of high frequency dynamic load signals.
本文提出了一种用于实时测量爆炸冲击波动态压力的压电压力传感器。通过添加质量块设计了具有加速度补偿的晶体组结构布局。建立了传感器的静态和动态模型以计算灵敏度和固有频率。分析了传感器结构参数对其静态和动态特性的影响。通过仿真获得了传感器在不同压力载荷下输入与输出之间的映射关系。制作了冲击波载荷下传感器的原型。搭建了静态和动态校准平台以完成校准实验。实验结果表明该传感器能够满足高频动态载荷信号的测量要求。
