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Taxonomy to Unify Fault Tolerance Regimes for Automotive Systems: Defining Fail-Operational, Fail-Degraded, and Fail-Safe

Stolte, Torben ; Ackermann, Stefan Martin ; Graubohm, Robert ; Jatzkowski, Inga ; Klamann, Björn ; Winner, Hermann ; Maurer, Markus (2022)
Taxonomy to Unify Fault Tolerance Regimes for Automotive Systems: Defining Fail-Operational, Fail-Degraded, and Fail-Safe.
In: IEEE Transactions on Intelligent Vehicles, 2021, 7 (2)
doi: 10.1109/TIV.2021.3129933
Artikel, Zweitveröffentlichung, Postprint

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Kurzbeschreibung (Abstract)

This paper presents a taxonomy that allows defining the fault tolerance regimes fail-operational, fail-degraded, and fail-safe in the context of automotive systems. Fault tolerance regimes such as these are widely used in recent publications related to automated driving, yet without definitions. This largely holds true for automotive safety standards, too. We show that fault tolerance regimes defined in scientific publications related to the automotive domain are partially ambiguous as well as taxonomically unrelated. The presented taxonomy is based on terminology stemming from ISO 26262 as well as from systems engineering. It uses four criteria to distinguish fault tolerance regimes. In addition to fail-operational, fail-degraded, and fail-safe, the core terminology consists of operational and fail-unsafe. These terms are supported by definitions of available performance, nominal performance, functionality, and a concise definition of the safe state. For verification, we show by means of two examples from the automotive domain that the taxonomy can be applied to hierarchical systems of different complexity.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Stolte, Torben ; Ackermann, Stefan Martin ; Graubohm, Robert ; Jatzkowski, Inga ; Klamann, Björn ; Winner, Hermann ; Maurer, Markus
Art des Eintrags: Zweitveröffentlichung
Titel: Taxonomy to Unify Fault Tolerance Regimes for Automotive Systems: Defining Fail-Operational, Fail-Degraded, and Fail-Safe
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Publikationsdatum der Erstveröffentlichung: 2021
Titel der Zeitschrift, Zeitung oder Schriftenreihe: IEEE Transactions on Intelligent Vehicles
Jahrgang/Volume einer Zeitschrift: 7
(Heft-)Nummer: 2
Kollation: 12 Seiten
DOI: 10.1109/TIV.2021.3129933
URL / URN: https://tuprints.ulb.tu-darmstadt.de/22082
Herkunft: Zweitveröffentlichungsservice
Kurzbeschreibung (Abstract):

This paper presents a taxonomy that allows defining the fault tolerance regimes fail-operational, fail-degraded, and fail-safe in the context of automotive systems. Fault tolerance regimes such as these are widely used in recent publications related to automated driving, yet without definitions. This largely holds true for automotive safety standards, too. We show that fault tolerance regimes defined in scientific publications related to the automotive domain are partially ambiguous as well as taxonomically unrelated. The presented taxonomy is based on terminology stemming from ISO 26262 as well as from systems engineering. It uses four criteria to distinguish fault tolerance regimes. In addition to fail-operational, fail-degraded, and fail-safe, the core terminology consists of operational and fail-unsafe. These terms are supported by definitions of available performance, nominal performance, functionality, and a concise definition of the safe state. For verification, we show by means of two examples from the automotive domain that the taxonomy can be applied to hierarchical systems of different complexity.

Freie Schlagworte: Safety, fault tolerance, fault tolerance regime, fail-operational, fail-safe, fail-degraded, safe state
Status: Postprint
URN: urn:nbn:de:tuda-tuprints-220820
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet Fahrzeugtechnik (FZD)
Hinterlegungsdatum: 09 Sep 2022 13:57
Letzte Änderung: 12 Sep 2022 06:03
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