脉冲式动态压力校准系统模型及性能分析
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摘要
分析了现有脉冲式动态压力校准系统模型的局限性,通过剖析校准系统的运动过程,根据其机理建立新的模型。分析锤体与活塞每次碰撞前后能量的转化,以及碰撞后活塞的受力情况,以活塞为研究对象进行n次迭代计算出完整的压力波曲线;与现有的模型进行比较,解释了由于校准系统在运动过程中锤体与活塞的连续碰撞而产生的压力波形跳动现象,并在实验中设定不同参数来研究波形质量的变化;得出随着活塞质量以及活塞面积与锤体质量比值的减小,校准系统产生的脉冲压力波形越好的结论,为实验装置的研制提供了参考依据。
The limitations of the existing pulsed dynamic pressure calibration system model waw analyzed. Through analyzing the working principle of the pulse dynamic pressure calibration system,a new model according to its mechanism was build. The energy transformation between drop weight and piston among collision and the force of piston after collision were analyzed. The piston was taken as the research object,and the pressure wave was calculated by iteration. Compared with the existing model,the phenomenon of pressure waveform jumping caused by the continuous collision between drop weight and piston in the calibration system was explained,and setting different parameters to study the changes of the waveform quality in the experiment. The results show that with the decrease of the ratio of piston mass,area and drop weight,the better the pulse pressure waveform produced by the calibration system is,and this is provid a reference for the manufacture of future test equipment.
The limitations of the existing pulsed dynamic pressure calibration system model waw analyzed. Through analyzing the working principle of the pulse dynamic pressure calibration system,a new model according to its mechanism was build. The energy transformation between drop weight and piston among collision and the force of piston after collision were analyzed. The piston was taken as the research object,and the pressure wave was calculated by iteration. Compared with the existing model,the phenomenon of pressure waveform jumping caused by the continuous collision between drop weight and piston in the calibration system was explained,and setting different parameters to study the changes of the waveform quality in the experiment. The results show that with the decrease of the ratio of piston mass,area and drop weight,the better the pulse pressure waveform produced by the calibration system is,and this is provid a reference for the manufacture of future test equipment.
引文
[1] PTB. Division 1-Mechanics and Acoustics[R]. PTB Reports,2009.
[2] Bruns T, Franke E, Kobusch M. Linking dynamic pressure to static pressure by laser interferometry[J].Metrologia,2013,50(6):580-585.
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[7] Zhang Y,Zu J,Zang H Y. Dynamic calibration method of high-pressure transducer based on quasi-delta function excitation source[J]. Measurement,2012,45(8):1981-1988.
[8] Elkarous L,Robbe C,Pirlot M. Dynamic calibration of piezoelectric transducers for ballistic high-pressure measurement[J]. International Journal of Metrology&Quality Engineering,2016,7(2):1-12.
[9] ISA. ISA-37. 16. 01-2002 A Guide for the Dynamic Calibration of Pressure Transducers[S]. 2002.
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[12]孔德仁,朱明武,李永新,等.压力传感器准静态“绝对校准”[J].传感器技术,2001,20(12):32-34.
[13]孔德仁,孙海波,朱明武,等.压力动态绝对校准方法研究[J].南京理工大学学报. 2000,24(3):261-264.
[14]范静,杨军,李程.基于激光测试技术的脉冲式压力校准方法[C]//2010年航空试验测试技术峰会.上海,2010:388-390.
[15] Lakka A,Saxholm S. Drop-weight system for dynamic pressure calibration[C]//7th Workshop on Analysis of Dynamic Measurements. France,Paris,2012.
[16]史博,蔡菁.脉冲式动态压力活塞腔谐振消除方法[J].计测技术,2014,34(S2):86-87.
[2] Bruns T, Franke E, Kobusch M. Linking dynamic pressure to static pressure by laser interferometry[J].Metrologia,2013,50(6):580-585.
[3] Cater C. KIAG. Calibration of piezoelectric sensors for combustion pressure analysis[S]. 2006.
[4] Kobusch M,Bruns T,Franke E. Challenges in practical dynamic calibration[C]//Advanced Mathematical and Computational Tools in Metrology and Testing. France,Paris,2009,78:204-212.
[5] Lally J, Cummiskey D. PRS-TN-15-0205 Dynamic pressure calibration[S]. 2005.
[6] Bartoli C,Beug M F,Bruns T,et al. Traceable dynamic measurement of mechanical quantities:objectives and first results of this european project[J]. International Journal of Metrology&Quality Engineering,2012,3(3):127-135.
[7] Zhang Y,Zu J,Zang H Y. Dynamic calibration method of high-pressure transducer based on quasi-delta function excitation source[J]. Measurement,2012,45(8):1981-1988.
[8] Elkarous L,Robbe C,Pirlot M. Dynamic calibration of piezoelectric transducers for ballistic high-pressure measurement[J]. International Journal of Metrology&Quality Engineering,2016,7(2):1-12.
[9] ISA. ISA-37. 16. 01-2002 A Guide for the Dynamic Calibration of Pressure Transducers[S]. 2002.
[10]朱明武.半正弦压力源的模型与设计[C]//全国压力计量测试技术年会.江苏苏州,2001.
[11]孔德仁,李永新,朱明武.冲击波测量用压力传感器准静态校准方法[J].仪器仪表学报,2002,23(z1):16-17.
[12]孔德仁,朱明武,李永新,等.压力传感器准静态“绝对校准”[J].传感器技术,2001,20(12):32-34.
[13]孔德仁,孙海波,朱明武,等.压力动态绝对校准方法研究[J].南京理工大学学报. 2000,24(3):261-264.
[14]范静,杨军,李程.基于激光测试技术的脉冲式压力校准方法[C]//2010年航空试验测试技术峰会.上海,2010:388-390.
[15] Lakka A,Saxholm S. Drop-weight system for dynamic pressure calibration[C]//7th Workshop on Analysis of Dynamic Measurements. France,Paris,2012.
[16]史博,蔡菁.脉冲式动态压力活塞腔谐振消除方法[J].计测技术,2014,34(S2):86-87.