Multidisciplinary Journal of Science and Technology

IMPROVING THE STABILITY OF TECHNOLOGICAL PROCESSES BASE D ON NORMAL DISTRIBUTION AND CONTROL CHARTS

Ablazova Kamola Sakhibovna

PhD Candidate Faculty of Mathematics, Andijan State University, Republic of Uzbekistan

Keywords: normal distribution, technological process, stability, control chart, asymmetry, exsess.

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Abstract

This article analyzes the issues of stability, an important factor in product quality control, and its provision. It presents an asymmetry-excess mathematical model that determines the stability of technological processes modeled with a normal distribution, and reveals the importance of its practical use. Ensuring the quality of products produced in technological operations depends on such properties as the stability and stability of the technological processes determined over time. Ensuring them depends on improving the properties of the technological processes at specified times, such as accuracy and reproducibility. In the article, mathematical models are built based on the CCs found on the basis of the "Asymmetry-excess" (  CC) statistics, which check whether the density function of a one-dimensional normal number X maintains its standard form during sampling times (i.e., determines the stability of the PP). With these models, it is possible to analyze the stability of the technological processes. Using these models, the stability of the technological processes was analyzed using mathematical models based on  CCs, based on the data obtained to study problems in the welding and painting shops of an automobile plant.

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