冲击波超压值粗大误差处理  

Research on the Processing of the Gross Error of Shock Wave Overpressure Value

作　　者：熊振宇 崔春生[1,2] 裴东兴 XIONG Zhenyu;CUI Chunsheng;PEI Dongxing(National Key Laboratory for Electronic Measurement TechnologyNorth University of China,Taiyuan 030051,China;School of Electrical Control Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051 [2]中北大学电气与控制工程学院,太原030051

出　　处：《兵器装备工程学报》2021年第2期94-97,共4页Journal of Ordnance Equipment Engineering

基　　金：装备预研重点实验室基金项目(6142001180408)。

摘　　要：分析了冲击波测试中粗大误差的来源,提出了归一化相似度粗大误差判别方法。结合某次实验的测量数据,分析了Grubbs判别法与归一化相似度判别法在数据处理中的效果,归一化相似度判别法能够有效地剔除受环境因子影响不符合冲击波特点的超压值。该方法可较好地解决3σ,Grubbs准则出现一定的误判以及无法处理小样本数据的问题。The source of gross error in shock wave tests was analyzed.A new method for identifying gross error based on normalized similarity was proposed.Combined with the measurement data from experiment,the effect of Grubbs discrimination method and normalized similarity discrimination method in data processing was analyzed.The normalized similarity discrimination method can effectively eliminate the overpressure value which is inconsistent with the characteristics of shock wave affected by the environmental factors.This method can solve the misjudgment by 3σ,Grubbs criterion and the difficulty in dealing with small sample data.

关 键 词：冲击波超压测试 数据处理 粗大误差的分析与判别 波形相似度 小样本数据 

分 类 号：O384[理学—流体力学]