基于动态特性补偿的冲击波测试数据处理方法

赖富文; 张志杰; 张建宇; 李冬

doi:10.11883/1001-1455(2015)06-0871-05

基于动态特性补偿的冲击波测试数据处理方法

doi: 10.11883/1001-1455(2015)06-0871-05

赖富文^{1, 2,},
张志杰¹,
张建宇²,
李冬²

1.
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
2.
中国白城兵器试验中心, 吉林白城 137001

详细信息

作者简介:
赖富文(1973—), 男, 博士, 高级工程师, lfw2003@sohu.com

中图分类号: O384
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- 文章访问数: 3183
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- 被引次数: 0
出版历程
- 收稿日期: 2014-05-07
- 修回日期: 2014-08-11
- 刊出日期: 2015-12-10

Processing method of shock wave test data based on dynamic characteristic compensation

1.
Key Laboratory of Instrumentation Science and Dynamic Measurement, North University of China, Taiyuan 030051, Shanxi, China
2.
Baicheng Ordnance Test Center of China, Baicheng 137001, Jilin, China

摘要

摘要: 利用激波管对传感器进行动态标定，采用特殊白化滤波器广义最小二乘迭代法建立冲击波测试传感器的数学模型并对其动态特性进行分析，提出采用基于零极点相消原理补偿法来对传感器动态特性进行补偿。实际试验的测试数据处理应用表明，基于动态特性补偿的数据处理方法能够提高传感器动态特性和冲击波测试数据的准确度。
- 爆炸力学 /
- 数据处理 /
- 零极点相消原理 /
- 动态特性补偿 /
- 冲击波 /
- 压力传感器
Abstract: First, the pressure transducer is calibrated using the shock tube. Second, the mathematical model of the pressure transducer is established through the system identification with Generalized Least Square Iterative Method with Special Whitening Filter. According to the model the dynamic characteristics can be obtained. Finally, the dynamic characteristics compensation method based on the zero pole cancellation method is proposed and applied to data processing. Practical application shows that data processing method based on dynamic compensation can improve the dynamic characteristics of the sensor and the accuracy of the test data.
- mechanics of explosion /
- data processing /
- zero pole cancellation method /
- dynamic characteristics compensate /
- blast wave /
- pressure transducer

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图 1 激波管实验装置

Figure 1. Calibration experiment of shock tube

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图 2 传感器动态标定曲线

Figure 2. Dynamic calibration curve of sensor

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图 3 传感器的仿真输出和实际输出比较

Figure 3. Simulation output of sensor model and original data

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图 4 补偿前后传感器的幅频特性

Figure 4. Original characteristic, compensation filter and compensated characteristic

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图 5 补偿前后阶跃响应输出对比

Figure 5. Step response before and after compensation

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图 6 动态校准曲线修正前后对比

Figure 6. Dynamic calibration curve before and after correction

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图 7 校准曲线直接低通滤波前后对比

Figure 7. Dynamic calibration curve before and after filtering

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图 8 实际测试曲线修正前后对比

Figure 8. Testing data before and after correction

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参考文献(8)

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