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传统的单侧限工序能力指数定义为T_U-μ/3σ(单侧上限)或μ-T_L/3σ(单侧下限。文章从标准化角度将单侧上限的工序能力指数调整为T_U-μ/σ;单侧下限的工序能力指数调整为μ-T_L/σ。调整后的单侧限工序能力指数不仅科学、合理,而且更便于实际应用。
The conventional one-sided process capability index is defined as T_U-μ / 3σ (one-sided upper limit) or μ-T_L / 3σ (one-sided lower limit) .The paper adjusts the unilateral upper limit of process capability index from standardization to T_U-μ / σ ; The unilateral lower limit of the process capability index adjusted to μ-T_L / σ. Adjusted single-sided process capability index is not only scientific and reasonable, but also more practical application.