zoukankan      html  css  js  c++  java
  • GR&R

    ANOVA gauge R&R (or ANOVA gauge repeatability and reproducibility) is a measurement systems analysis technique that uses an analysis of variance (ANOVA)random effects model to assess a measurement system.

    NOVA gauge R&R measures the amount of variability induced in measurements by the measurement system itself, and compares it to the total variability observed to determine the viability of the measurement system. There are several factors affecting a measurement system, including:

    • Measuring instruments, the gauge or instrument itself and all mounting blocks, supports, fixtures, load cells, etc. The machine's ease of use, sloppiness among mating parts, and, "zero" blocks are examples of sources of variation in the measurement system. In systems making electrical measurements, sources of variation include electrical noise and analog-to-digital converter resolution.
    • Operators (people), the ability and/or discipline of a person to follow the written or verbal instructions.
    • Specification, the measurement is reported against a specification or a reference value. The range or the engineering tolerance does not affect the measurement, but is an important factor in evaluating the viability of the measurement system.
    • Parts or specimens (what is being measured), some items are easier to be measured than others. A measurement system may be good for measuring steel block length but not for measuring rubber pieces, for example.

    There are two important aspects of a Gauge R&R:

    • Repeatability: The variation in measurements taken by a single person or instrument on the same or replicate item and under the same conditions.[1]
    • Reproducibility: the variation induced when different operators, instruments, or laboratories measure the same or replicate specimen.[1]
  • 相关阅读:
    Django的models介绍
    Django的模板继承
    Django的模板语言介绍
    django的视图函数介绍
    django的流程分析
    1、数据库优化
    git 开发中的总结
    ob
    docker-compose
    如何批量删除Docker中已经停止的容器
  • 原文地址:https://www.cnblogs.com/fdyang/p/4485042.html
Copyright © 2011-2022 走看看