FENG Hao, ZHANG Zhi-jie
(Key Laboratory of Instrumentation Science & Dynamic Measurement （North University of China）, Ministry of Education， Taiyuan 030051, China)
Abstract： A new distributed test system composed of multiple test nodes was designed by adopting storage test technology to test shock waves in explosion field. The advantage of the system is the application of sensor lattice whose rise time is microsecond level, which can quickly response to transient shock wave signals. In order to reduce dynamic response error, shock tube is employed to conduct dynamic calibration on the system. The overpressure peak values of the explosion shock wave collected by sensor lattice were used to construct a shock wave pressure field with B-spline interpolation algorithm.
Key words： distributed test system; dynamic calibration; interpolation algorithm; reconstruction
CLD number： TP274Document code： A
Article ID： 1674-8042（2015）01-0025-05 doi： 10.3969/j.issn.1674-8042.2015.01.005
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基于分布式测试系统的冲击波压力场重建的研究
冯浩， 张志杰
（中北大学 仪器科学与动态测试教育部重点实验室， 山西 太原 030051）
摘要:采用存储测试技术设计了一套由多个测试节点组成的分布式测试系统， 此系统可用于爆炸冲击波测试。 该系统采用上升时间为微秒级的传感器点阵， 能够快速响应瞬态冲击波信号。 为减小动态响应误差， 利用激波管对系统进行了动态标定。 在静爆试验中由传感器点阵采集得到的爆炸冲击波超压峰值， 采用三次样条插值算法对冲击波压力场进行了重建， 并对重建结果进行了误差分析。
关键词:分布式； 动态标定； 插值算法； 重建
引用格式：FENG Hao, ZHANG Zhi-jie. Reconstruction of shock wave pressure field based on distributed test system. Journal of Measurement Science and Instrumentation, 2015, 6(1)： 25-29. ［doi： 10.3969／j.issn.1674-8042.2015.01.005］
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