This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A Fail-Operational Assessment for Controllability and Comfortability of Steer-by-Wire Systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 06, 2021 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: SAE WCX Digital Summit
This paper describes a fail-operational evaluation of the controllability and comfortability for the safety architecture development of steer-by-wire (SbW) systems. According to the functional safety requirement, it is demanded that Steer-by-Wire systems shall continue to function and not misbehave after a failure by the intended fail tolerant sub-system. Most recently, developing Steer-by-Wire Systems are well advanced in fail-operational design utilizing the redundant systems, principally using Sensor voting or ECU switching functions. The system can sustainably keep the lateral motion of vehicle even though a failure is detected while driving. During such events, the controllability assessment is used to determine the fault-tolerant time interval (FTTI), including failure detection and the safe state transition time. Furthermore, typically highly automated vehicles will be controlled without the human driver's input or reaction; this study considers test assessment containing the controllability for the driver and the comfortability for the passenger. The evaluation is accomplished by the comprehensive methodological approach composed of questionnaire jury ratings, vehicle behaviors, and physiological measures. The results can be applied to determine the requirements of SbW systems.
CitationKOO, T., Kim, D., Ham, S., Hong, S. et al., "A Fail-Operational Assessment for Controllability and Comfortability of Steer-by-Wire Systems," SAE Technical Paper 2021-01-0930, 2021, https://doi.org/10.4271/2021-01-0930.
Data Sets - Support Documents
|Unnamed Dataset 1|
|Unnamed Dataset 2|
|Unnamed Dataset 3|
- Becker , C. , Brewer , J. , Arthur , D. , and Attioui , F. Aug. 2018
- Becker , C. , Nasser , A. , Attioui , F. , Arthur , D. , Moy , A. , and Brewer , J. Aug. 2018
- Huang , C. , and Li , L. Architectural Design and Analysis of a Steer-by-Wire System In View of Functional Safety Concept Reliability Engineering and System Safety 198 106822 2020
- Koo , T. , Hong , S. , Kim , D. , Tae , H. et al. A Study on the Controllability of the Vehicle Steer-by-Wire Systems SAE Technical Paper 2020-01-0646 2020 10.4271/2020-01-0646
- ISO, 26262-1 Road Vehicles - Functional Safety 6 2018
- Klesing , J. and Hales , M. Safety Architectures for Steer-by-Wire Steering System USA 2019 Mar. 2019
- Neukum , A. , Ufer , E. , Pauling , J. , and Kruger , H. Controllability of Superposition Steering System Failures Steering Tech 2008 Munchen Garching Mar. 2008
- Chung , W. , Chong , T. , and Lee , B. Methods to Detect and Reduce Driver Stress: A Review Int. J. of Automotive Technology 20 5 1051 1063 2019