Part average analysis – A tool for reducing failure rates in automotive electronics

As the complexity of technical systems increases, it is a matter of course that the quality requirements made on the assemblies, modules and components which are used increase as well. The Part Average Analysis (PAA) reveals a software-based methodical approach which can be used to improve the reliability and availability of technical functions in an efficient manner. The PAA is used to observe anomalies in functions or parameters to measure during the production process, reliably indicating a concealed defect. Components with a high risk of failure are rejected and are not installed in the vehicle (prevention). In this paper, the method will be presented, the mathematical model explained and experiences with automotive suppliers will be reported.