基于新一代GPS的产品检验符合性不确定度评定

发布时间：2018-03-13 08:02

本文选题：产品几何技术规范　切入点：符合性不确定度　出处：《机械工程学报》2016年24期 　论文类型：期刊论文

【摘要】：新一代产品几何技术规范将测量不确定度的概念拓展至符合性不确定度,但并未给出相对应的评定方法。为全面估计产品检验中测量结果与产品规范所有可能的差异,基于新一代产品几何技术规范,研究产品检验符合性不确定度评定。基于产品几何技术规范定义,提出规范不确定度、方法不确定度、符合性不确定度的评定方法;借助不确定度的黑箱模型,通过测量结果统计学量值特性指标,评定执行不确定度。以产品圆度检验为例,研究符合性不确定度评定操作过程,基于符合性不确定度划分产品检验的合格区间。实例分析结果表明,规范不确定度和方法不确定度的量值与执行不确定度相当,不可忽略;由于符合性不确定度包含测量结果与图纸规范所有可能的不一致性,基于符合性不确定度进行产品合格判定更为可靠。
[Abstract]:The concept of uncertainty of measurement is extended to the uncertainty of measurement in the new generation of product geometry specifications, but the corresponding evaluation method is not given. In order to estimate all possible differences between measurement results and product specifications in product inspection, Based on the new generation of product geometric specifications, the evaluation of product inspection compliance uncertainty is studied. Based on the definition of product geometric technical specification, the evaluation methods of specification uncertainty, method uncertainty and conformity uncertainty are proposed. With the help of the black-box model of uncertainty, the uncertainty of execution is evaluated by measuring the statistical quantitative characteristic index of the result. Taking the roundness test of product as an example, the operational process of evaluating the uncertainty of conformity is studied. Based on the uncertainty of conformance, the qualified interval of product inspection is divided. The result of example analysis shows that the quantity value of standard uncertainty and method uncertainty is equal to that of execution uncertainty, which can not be ignored. Because the uncertainty of conformance includes all possible inconsistency between the measurement result and the specification of the drawing, it is more reliable to judge the conformity of the product based on the uncertainty of conformity.
【作者单位】：合肥工业大学仪器科学与光电工程学院;
【基金】：国家自然科学基金(51275148) 合肥工业大学青年教师创新(JZ2014HGQC0126)资助项目
【分类号】：TG806

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