Abstract: Limited by their dynamic characteristics, piezoelectric pressure sensors usually can not meet the test requirements of the shock wave pressure in the zone near explosive and signal distortion occurs. Firstly, the dynamic characteristics of piezoelectric pressure sensors are investigated through shock tube calibration experiments. Digital compensation filters based on dynamic compensation technique are designed to eliminate the dynamic measurement error caused by the narrow work band and the low natural frequency of the sensor. Finally, the results of comparative tests and numerical computing validate that the proposed method can effectively reduce the dynamic measurement error and enhance the pressure measurement accuracy.
[1] 黄俊钦.测试系统动力学[M].北京:国防工业出版社,1996:325.
[2] 原玢.冲击波超压测试系统的动态不确定度研究[D]. 太原:中北大学,2012.
[3] 徐科军,唐霆.传感器零极点相消动态补偿法[J].科学通报,1994,39(9):862.
XU Ke-jun, TANG Ting. Dynamic compensation method of pole-zero suppressing[J]. Chinese Science Bulletin,1994, 39(9) : 862.
[4] 石洁,金建新,周振华.基于FLANN算法的速度传感器动态补偿[J].测试技术学报,2012, 26(3):260-264.
SHI Jie,JIN Jian-xin,ZHOU Zhen-hua.Dynamic compensation based on FLAAN algorithm for velocity sensor [J]. Journal of Test and Measurement Technology, 2012, 26(3): 260-264.
[5] 吴德会,杨世元,董华.基于最小二乘支持向量机的传感器动态补偿方法[J].计量学报,2007, 28(4):344-348.
WU De-hui, YANG Shi-yuan, DONG Hua. A dynamic compensation method for sensors based on least squares support vector machines[J]. Acta Mctrologica Sinica, 2007, 28(4):334-348.
[6] 刘清,曹国华.基于微粒群法优化的微硅加速度传感器动态补偿研究[J].仪器仪表学报,2006, 27(12): 1708-1710.
LIU Qing, CAO Guo-hua. Study on dynamic compensation method for micro-silicon accelerometer based on swarm optimization algorithm[J]. Chinese Journal of Scientific Instrument, 2006, 27(12): 1708-1710.
[7] 叶湘滨,张文娜.压力传感器动态性能分析及改进[J].传感器技术,2002, 21(2): 11-14.
YE Xiang-bin, ZHANG Wen-na. Analysis and improvement for dynamic performance of pressure sensor[J]. Joumal of Transducer Technology, 2002, 21(2): 11-14.
[8] 刘一江,孟立凡,张志杰,等.冲击波测试系统中传感器动态补偿装置[J].传感器技术学报,2012, 25(11):1516-1521.
LIU Yi-jiang,MEMH Li-fan,ZHANG Zhi-jie,et al.A sensor’s dynamic compensation device in shock wave test system[J]. Chinese Journal of Sensors and Actuators,2012,25(11):1516- 1521.
[9] 朱照,张志杰.传感器实时动态补偿方法与误差分析[J].传感器与微系统,2010, 29(6): 68- 69.
ZHU Zhao, ZHANG Zhi-jie. Real-time dynamic compensa- tion method of sensor and error analysis[J]. Transducer and Micro System Technologies, 2010, 29(6): 68- 69.