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无论是量值传递,还是计量器具的选择,都必须保证量值的不确定度达到一个合理的程度。测量过程产生的误差越小,误判率就越小。按照全面质量管理的理论,工序能力指数C_p 值的大小与产品合格率密切相关。工序能力越强,废品率越低,产品质量越高。工序能力级别与 C_p 值、废品率的关系如表1所示。本文试探讨一下计量器具精确度对工序能力指
Whether the value of the transfer, or the choice of measuring instruments, we must ensure that the value of the uncertainty reached a reasonable level. The smaller the error caused by the measurement, the lower the false positive rate. According to the theory of total quality management, the value of process capability index C_p is closely related to the product qualification rate. The stronger the process capability, the lower the rejection rate, the higher the product quality. Table 1 shows the relationship between process capability level and C_p value and reject rate. This article examines the accuracy of measuring instruments refers to the ability of the process