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基于功效系数法的卷烟加工过程管控评价方法

A method for assessing process control in cigarette manufacturing based on efficacy coefficient method

  • 摘要: 为了提高卷烟加工过程管控能力,以工艺标准为基础,根据功效系数法原理,分析了卷烟加工过程参数的量化表征方法、单变量参数评价方法和多变量参数评价方法。方法包括:①参数量化表征可采用偏离度和离散度,偏离度表征实际控制值与工艺标准值的偏离程度;离散度表征实际波动情况与工艺标准要求的满足程度。②单变量参数评价包括望目型和极值型,望目型通过距离法对偏离度和离散度进行综合转换后采用功效系数法评价,极值型直接采用功效系法进行评价。③多变量综合评价包括工序和批次。工序评价采用单变量算术加权方法,批次评价采用工序几何加权方法。企业应用效果表明,该方法可实现卷烟加工过程管控的多维度量化分析,可为过程持续改进和提高管控水平提供一种较为适用、简单直观的综合评价方法。

     

    Abstract: In order to improve the capability of process management and control in cigarette manufacturing, the methods of parameter quantitative characterization, monovariable parameter assessment and multivariate parameter assessment in cigarette manufacturing process were analyzed on the basis of technical standards and the principle of efficacy coefficient method. Where:1) Parameters could be quantitatively characterized by either deviation or dispersion, deviation reflected the degree that controlled value deviated from technical standard value and dispersion reflected the degree that the actual fluctuation satisfied the requirements of technical standards. 2)The assessment of monovariable parameter was conducted by expected target or extreme value; in the case of expected target, it was assessed by efficacy coefficient method after comprehensive conversion of deviation and dispersion by distance method; however, in the case of extreme value, it was assessed by efficacy coefficient method directly. 3)Multivariable comprehensive assessment applied to process step and batch. For process step assessment, monovariable arithmetic weighted method applied; and for batch process step, geometric weighted method applied. The industrial application showed that the method, by multi-dimensional quantitative analysis, provided an applicable, simple, intuitive and comprehensive assessment of process management and control in cigarette production.

     

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