2nd ICAI 2022

International Conference on Automotive Industry 2022

Mladá Boleslav, Czech Republic

Verification of Functional Safety Concept with System FMEA Juraj Pančík 1 , Vladimír Beneš 2 ŠKODA AUTO University 1, 2 Department of Informatics Na Karmeli 1457, 293 01 Mladá Boleslav Czech Republic e-mail: juraj.pancik@ambis.cz 1 , vladimir.benes@savs.cz 2 Abstract In presented contribution we describe the preparation and realization of verification of the Functional Safety Concept (FSC) according to standard ISO 26262:2018, Functional safety – road vehicles. The functional safety concept (FSC) is a statement of the functionality to achieve the safety goals. FSC verification can be performed using the system FMEA (S-FMEA) method. This method allows the specification of the functional safety requirements, with associated information, their allocation to system elements within the item architecture, and their interaction necessary to achieve the safety goals. The selected software tool was software APIS IQ with Mechatronic FMEA extension. To comply with the safety goals, the functional safety concept based on System FMEA contains safety measures (including the safety mechanisms), to be implemented in the item’s architectural elements and next specified in the functional safety requirements. The concept of FSC verification using the S-FMEA is demonstrated with the solution of S-FMEA for Electric Parking Brake (EPB). The FMEA model of EPB is based on the known standard VDA 305-100. Keywords: functional safety, electric parking brake, FMEA, ISO 26262:2018, safety concept JEL Classification: L740, L790, L630 1. Introduction In our contribution we describe of preparation and concept of verification of the functional safety concept (FSC) according to standard ISO 26262:2018 [1]. The functional safety concept is a statement of the functionality to achieve the safety goals [2] [3] [4]. Its verification is performed using the System FMEA (S-FMEA) method. This method allows the specification of the functional safety requirements, with associated information, their allocation to system elements within the architecture, and their interaction necessary to achieve the safety goals. To comply with the safety goals, the functional safety concept based on System FMEA contains safety measures (including the safety mechanisms), to be implemented in the item’s architectural elements and next specified in the functional safety requirements. The concept of FSC verification is based on S-FMEA and is demonstrated with the solution of S-FMEA for Electric Parking Brake (EPB) with software APIS IQ and its Mechatronic FMEA extension. The FMEA model of EPB is based on the known standard VDA 305-100 [5].

17