2nd ICAI 2022

International Conference on Automotive Industry 2022

Mladá Boleslav, Czech Republic

and at level 3 “3_Failure detections”. Both these APIS IQ elements represent installed safety mechanism in S-FMEA model. The structure “3_Failure detections” contains a set of error detection functions with corresponding error detection (see right upper of this figure). Both elements have the same description text – in this case we see error function “Clamping / release time monitoring” with corresponding error detection. Lower part of the image represents the bottom panel in APIS IQ. This bottom panel is synchronized with the top panel (structure editor); the bottompanel represents functional net editor. Here we see how the error function was connected by S-FMEA modeler to the functions and errors which are created in steps 1-3 (see previous chapter). All these APIS IQ elements are localized in the third (component) layer in structure editor. 3.2.2 Error detection functions and error detection Until this time we showed at Figure 3 implementation of set of error detection functions and error detections in element “3_Failure Detections”. At Figure 4 we will study implementation of set of error response functions and error response in element “2_Failure Reactions” (see upper panel, structure editor, left side). On right side is possible to see a set of error response functions with error responses (both have same text description). At failure net editor in below panel is possible to see full net of safety mechanism. Right side of this panel represents “classic” parts of FMEA model (in sense of FMEA VDA standard). It is possible to see detection actions and preventive actions joined with each function and its associated failure. These elements are joined with created safety mechanisms on left side. Each error response function with corresponded error response is in this S-FMEA model connected direct to own safety goal or top function on vehicle level. 4. Conclusion Our task was to prepare a functional safety concept (FSC) verification using a FMEA system. The functional safety concept (FSC) is a statement of the functionality of item to achieve the safety goals. We have shown the achievement of safety goals using the system FMEA (S-FMEA), which was preceded by safety analysis. We have described the individual steps of safety measures analysis. Subsequently, we described the safety measures and mechanism and expressed them with S-FMEA model built on APIS IQ software with its “Mechatronics FMEA” extension. In this software, we have added a detection mechanism and a safety mechanism to the FMEA model. By this step we connected them with safety goals and verified FSC by this way.

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