Automated Generation of FMEAs using SysML for Reliability, Safety, and Cybersecurity

In this paper, an automated FMEA generation capability using the SysML modeling language and described its application to a simple SCADA computer network was described. The outputs produced by the tool (implemented as a SysML plug-in) from this analysis were presented, and the resultant insights into the design were described. The fundamental innovation in our approach is the identification and enumeration of all failure propagation paths and the detailed documentation of the failure transformations, detection measures, mitigation measures and protective measures that can be applied to these devices to prevent or mitigate the impact of the anomaly. By doing so, we can expand the traditional FMEA approach to analysis of cyberattack vectors. Because our approach is automated and can be readily integrated into a system development effort using Model Based Systems Engineering (MBSE), the analysis can be readily repeated throughout the design and can be used frequently to assess a system design, identify weaknesses, and take corrective actions to create a more resilient and robust system.