Integrating Error Propagation Theory Into the FMEDA Framework (Robert Bosch GmbH)

The technical paper by Robert Bosch GmbH introduces a new approach to enhance the accuracy and reliability of safety metrics in functional safety verification of ASICs for automotive systems. Traditional metrics like SPFM and LFM in FMEDA analysis rely on estimations of failure mode distribution and diagnostic coverage, leading to uncertainties and expert judgment dependencies. The proposed method integrates error propagation theory to calculate safety metrics, providing confidence intervals and identifying primary sources of uncertainty through an Error Importance Identifier (EII). This novel approach aims to improve transparency and trustworthiness in FMEDA, enabling more robust ASIC safety verification for ISO 26262 compliance.