Device for predictive diagnosis of the current quality of technical production from a technical installation, particularly of the current quality of welding points of a spot welding robot

A device for predictively diagnosing a prevailing quality of a technical work result of a technical installation, comprising:

• a first device cyclically acquiring sets of measured values during operation of the technical installation, the active values influencing a desired quality of the technical work result of the technical installation;
• an installation model simulating an actual value for the prevailing quality of the technical work result of the technical installation using at least one active one of the acquired sets of measured values;
• and
• a second device parameterizing the installation model, the second device including a database for storing selected ones of the acquired sets of measured values, and characteristic quality values determined as an examination result, the characteristic quality values being a measure for the respective quality of the technical work result of the technical installation, and an evaluator successively evaluating the measured values and the characteristic quality values by an iterative optimization, the evaluator further determining parameters of the installation model.