Method and system for evaluating quality in process of manufacturing cigarette

Abstract

The invention discloses a method and system for evaluating quality in the process of manufacturing batch cigarette products. The method and system are characterized in that on the basis of evaluating the process quality of certain procedure single quality characteristic value, process performance indexes of a multivariable procedure are calculated by a principal component analysis method to obtain the weights of all principal components according to the respective characteristics of the procedures of shredding, wrapping, molding and the like, and the process performance indexes of the procedure are acquired through arithmetic weighted average, so that the quality in the process of manufacturing the cigarette is evaluated. Compared with other evaluation methods, the evaluation method disclosed by the invention has the advantages that: the selection of evaluation indexes more conforms to actual production demands, and the actual application range is wider; the establishment of evaluation standards fully refers to the conventional research results and is more scientific and objective; the quality control conditions of all production procedures of the cigarette can be better known through the evaluation; and more adequate data support is provided for continuously improving the quality in the process of manufacturing the cigarette and the final quality.

Description

technical field [0001] The invention discloses a method for evaluating the quality of a cigarette manufacturing process and a system thereof, and belongs to the technical field of comprehensive quality evaluation of the tobacco batch production process. Background technique [0002] A Chinese patent discloses a "Comprehensive Evaluation System and Method for Cigarette Process Quality Based on Gray Relational Analysis" (Patent No. 200810237698.3). The technical points of the above patent are: the system and method described are single-process quality evaluation and gray relational analysis methods The combination of the process capability index of each process parameter is calculated first, and then the Cpk value is comprehensively evaluated by the gray correlation method. The final comprehensive evaluation result is the ranking of the process quality of each evaluation object. Analyze the ranking results of Cpk and process quality. The shortcoming of above-mentioned patent ...

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Problems solved by technology

[0004] (2) This method only performs a simple sorting of the calculated results to determine the improvement of the process with poor process quality. It is only the result of the relative comparison of several processes, and sometimes it cannot truly reflect the actual processing quality of the process. When the process capability index Cpk ≥ 1.67 of several processes, the process quality is at a relatively high level, and there is no improvement for relatively poor processes

[0005] (3) Gray relational analysis refers to the quantitative description and comparison of the development and change of a system. Its basic idea is to judge whether the connection is close by determining the geometric similarity between the reference data column and several comparative data columns. It reflects the correlation degree between the curves, but the correlation degree can be divided into absolute correlation degree and relative correlation degree. The absolute correlation degree is initialized by initial point zeroing method. Inconsistent dimensions often affect the analysis and make it difficult to obtain reasonable results

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