This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Estimation of Controllability Based on Driver Behavior - A Case of Insufficient Brake-Assist Force
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
Controllability (C) is the parameter that determines the Automotive Safety Integrity Level (ASIL) of each hazardous event based on an international standard of electrical and/or electronic systems within road vehicles (ISO 26262). C is classified qualitatively in ISO 26262. However, no specific method for classifying C is described. It is useful for C classification to define a specific classification based on objective data.
This study assumed that C was classified using the percentage of drivers who could reduce Severity (S) in one or more classes compared with the S class in which the driver did not react to a hazardous event.
An experiment simulated a situation with increased risk of collision with a leading vehicle due to insufficient brake force because of brake-assist failure when the experiment vehicle decelerated from 50 km/h on a straight road. First, the relationship between the S class and the difference of speed at the moment of collision obtained in the experiment was classified according to ISO/DIS 26262 Part 3 Annex B. C was then classified as C3 base on the classification result and the method of classifying C Class. We then attempted to classify C using the experiment time sequence of brake-pedal effort when the characteristics of brake-assist differed from those of the experiment.
The result indicated that C can be classified in the experiment and that it is possible to classify C when the characteristics of brake-assist differ from those of the experiment.
|Technical Paper||A System Safety Perspective into Chevy Bolt’s One Pedal Driving|
|Technical Paper||Towards Standardized Performance Evaluation of Camera-Based Driver State Sensing Technologies|
CitationKawakoshi, M., Kaneko, T., and Nameki, T., "Estimation of Controllability Based on Driver Behavior - A Case of Insufficient Brake-Assist Force," SAE Technical Paper 2014-01-0236, 2014, https://doi.org/10.4271/2014-01-0236.
- International Standard Road vehicles - Functional safety - Part 3: Concept phase ISO 26262-3 Nov. 2011
- International Standard Road vehicles - Functional safety - Part 3: Concept phase ISO/DIS 26262-3 Jun. 2009