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An Approach to the Safety Design and Development of a Brake-by-Wire Control System
Technical Paper
2011-01-0212
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The increasing usage of brake-by-wire systems in the automotive industry has provided manufacturers with the opportunity to improve both vehicle and manufacturing efficiency. The replacement of traditional mechanical and hydraulic control systems with electronic control devices presents different potential vehicle-level safety hazards than those presented by conventional braking systems. The proper design, development, and integration of a brake-by-wire control system requires that hazards are reasonably prevented or mitigated in order to maximize the safety of the vehicle operator, occupant(s), and passers-by. The purpose of this paper is to discuss an approach to the design, development, and integration of a brake-by-wire control system from a safety perspective, which includes a method to:
- Identify the potential system hazards
- Determine the component failure combinations that can lead to a system hazard
- Analyze the component failure modes and the design controls used to prevent and detect those failure modes
- Correlate the failure prevention and detection methods to the program-defined subsystem requirements
- Define an on-target validation plan to confirm the proper system reactions for each failure mode
- Summarize the system hazards and the strategy, mechanisms used, and system implementation for the prevention and mitigation of those hazards
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Citation
Roberts, M. and Chhaya, T., "An Approach to the Safety Design and Development of a Brake-by-Wire Control System," SAE Technical Paper 2011-01-0212, 2011, https://doi.org/10.4271/2011-01-0212.Also In
References
- Road vehicles - Functional safety International Organization for Standardization 2009 ISO 26262 Draft International Standard
- Ericson, Clifton A. II “Fault Tree Analysis - A History.” Proceedings of the 17 th International System Safety Conference Seattle, Washington The Boeing Company 1999
- Lambert, H. “Use of Fault Tree Analysis for Automotive Reliability and Safety Analysis,” SAE Technical Paper 2004-01-1537 2004 10.4271/2004-01-1537
- SAE International Surface Vehicle Standard “Potential Failure Mode and Effects Analysis in Design (Design FMEA), Potential Failure Mode and Effects Analysis in Manufacturing and Assembly Processes (Process FMEA),” SAE Standard J1739 Jan. 2009