Research on Inspection and Grade Evaluation of Product Quality Based on Fuzzy Mathematics

摘要

Based on the switching power supply as an example, through the establishment of evaluation index system of switching power supply quality, the weight coefficient of each evaluating indicator is given by experts using the cycle calculation method and the direct digitization method as the basis for quality inspection. Based on the theory of probability statistics, the quality test statistic is constructed, which can be used to test whether the product is qualified or not. The maximum closeness principle of fuzzy mathematics is introduced into the product quality ranking. Quantitative analysis of product quality is easy to analyze and evaluate product grade. These studies provide reference for the selection of outsourcing parts to evaluate product quality level, to improve utilization of ancillary products to further improve the quality of purchased or the quality of the whole system, and for the enterprise or the factory bring more economic benefits.