基于分布参数区间值比较的条件影响分析方法  

Analysis of Affection of Condition Based on Comparison of Distribution Parameters Interval Values

作　　者：刘岑[1] 吴森林[1] 杨帆[2] 洪凯[1] 张恕[1] 刘小宁[2] Liu Cen;Wu Senglin;Yang Fan;Hong Kai;Zhang Shu;Liu Xiaoning(School of Mechanical and Electrical Engineering, Hubei Light Industry Technology Institute, Wuhan 430070, Hubei;School of Mechanical Engineering, Wuhan Vocational College of Software and Engineering, Wuhan 430205, Hubei)

机构地区：[1]湖北轻工职业技术学院机电工程学院,湖北武汉430070 [2]武汉软件工程职业学院机械工程学院,湖北武汉430205

出　　处：《武汉工程职业技术学院学报》2021年第2期1-7,共7页Journal of Wuhan Engineering Institute

基　　金：湖北省教育厅科研项目(B2019421);武汉黄鹤英才(教育)计划项目。

摘　　要：应用数理统计知识与概率论,建立了一种直接方法,在一定双侧置信度时,通过比较两个基本符合正态分布随机变量分布参数的区间值,可分析加工处理方法或者使用条件变化对其分布参数的影响程度。实例研究表明:通过比较随机变量对应分布参数区间值与波动范围,不但可以为工程界选择加工或者处理方法提供了依据,而且也可分析公式的精度与稳定性,为工程界选择合适的计算公式提供参考。A direct method is established by applying the knowledge of mathematical statistics and probability theory to analyze the influence of processing method or the change of conditions on the distribution parameters by comparing the interval values of the distribution parameters of two random variables which basically conform to the normal distribution under certain bilateral reliability degree.The case study shows that comparing the corresponding distribution parameter interval value and fluctuation range of random variables not only can be applied to the engineering circle in choosing the processing or treating method,but also to analyzing accuracy and stability of the formula,and thus providing reference to the engineering circle in choose the appropriate calculation formula.

关 键 词：分布参数 区间值 波动范围 比较 条件影响 

分 类 号：TH142[一般工业技术—材料科学与工程] O211.9[机械工程—机械制造及自动化]