Aiming at the problem that the service life of heat meters can only be roughly judged(through the durability test,the service life is 5 years),a method of predicting the service life of heat meters based on regression analysis is proposed.Grey relational degree analysis was used to determine the degree of correlation between each factor and its service life.The variable relationship between each in-fluencing factor and its service life was obtained in multiple directions by one-element polynomial re-gression analysis and multiple nonlinear regression analysis.The accuracy of the model was verified by residual analysis,goodness of fit test and confidence interval test.The results show that the method based on regression analysis is accurate and reliable,which lays a foundation for its type evaluation and quality analysis.
关键词
耐久性试验/寿命预测/灰色关联分析/回归分析
Key words
durability test/service life prediction/grey relational analysis/regression analysis
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