METHOD AND DEVICE FOR AUTOMATICALLY IDENTIFYING A PRODUCT ERROR IN A PRODUCT AND/OR FOR AUTOMATICALLY IDENTIFYING A PRODUCT ERROR CAUSE OF THE PRODUCT ERROR

摘要

The invention relates to a method for automatically identifying a product error in a product (1, 2, 3, 40, 41, 42, 43, 44, 45) and/or for automatically identifying a product error cause of the product error, comprising the steps: - producing the product (1, 2, 3, 40, 41, 42, 43, 44, 45, 100) from a multiplicity of product elements (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18) by way of a multiplicity of manufacturing steps, and - detecting a number n of items of test information by means of at least one product test (101), wherein the n items of test information form an n-dimensional test value. The method according to the invention is characterized by the steps: - carrying out dimension reduction of the n-dimensional test value (102) by means of at least one statistics process to obtain a dimension-reduced test value, - comparing the dimension-reduced test value (103) to a multiplicity of learned reference values (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60), - assigning the dimension-reduced test value to at least one group of reference values (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 104) that are similar to each other, and - automatically identifying the product error (105) and/or the product error cause (106) on the basis of the assignment. The invention further relates to a corresponding device.