用蒙特卡洛方法研究冲击测温实验优化设计与不确定度评定  

Experiment Designs and Uncertainty Assessments for Shock Temperature Measurements by Monte Carlo Method

作　　者：李欣竹[1] 王翔[1] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900

出　　处：《高压物理学报》2003年第1期56-64,共9页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金资助 ( 10 0 32 0 40 )

摘　　要：讨论了使用蒙特卡洛方法研究冲击测温实验优化设计的问题。针对目前的实际条件 ,计算了 1 0种典型设计对 2 0 0 0～ 1 0 0 0 0K温度区间进行探测的不确定度。综合分析给出了优化的实验设计所应考虑的因素 ,计算过程同时解决了冲击测温实验温度不确定度的评定问题。显示了蒙特卡洛方法在较复杂实验系统优化设计及不确定度评定方面的良好应用前景。In this paper,the Monte Carlo (MC) method was used to investigate the optimization of pyrometer design and the uncertainty assessment for shock-induced temperature measurements.The statistic T 90%,which was defined by p{｜T-T true ｜>T 90%}=0.1,was calculated for 10 kinds of designs,and each case was simulated 2×105times to make the statistical sample. Four conclusions are presented:(1) Using more channels in a pyrometer can surely,but slightly improves the measurement accuracy of shock-induced temperature.(2) In the most case, measurement accuracy evidently depends on the accuracy of each channel. Generally,when the channel uncertainty is reduced from 10% to 5%, the experimental accuracy can be increased by over 150%.(3) The measurement accuracy also obviously depends on the channel's wavelength range.(4) The measurement accuracy can be largely improved by using those wavelength channels at which the difference of the radiation energy measured is as large as possible.

关 键 词：冲击测温实验 优化设计 蒙特卡洛方法 不确定度评定 冲击波 温度测量 高压 

分 类 号：TB942[一般工业技术—计量学] O347[机械工程—测试计量技术及仪器]