This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Designs for Safety/Mission Critical Systems
Technical Paper
2005-01-0775
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
We investigate and analyze the concept of “missed detection” and its application to the design of architectures that integrate multiple safety/mission critical functions. The analysis is based on considering different design alternatives with varying levels of missed fault detection of the components constituting the functions or subsystems. The overall system reliability and availability in a fault tolerant architecture relies as heavily on the ability to detect a fault as it does on being able to prevent a fault as one would attempt by having multiple levels of redundancy and/or improved reliability of the components in such an architecture. In short, the safety of a particular architecture depends not only on component reliability, and fault tolerance, expressed as redundancy, but also on fault detectability.
Recommended Content
Citation
Debouk, R. and Wysocki, J., "Comparison of Designs for Safety/Mission Critical Systems," SAE Technical Paper 2005-01-0775, 2005, https://doi.org/10.4271/2005-01-0775.Also In
Occupant Safety, Safety-Critical Systems, and Crashworthiness
Number: SP-1923; Published: 2005-04-11
Number: SP-1923; Published: 2005-04-11
SAE 2005 Transactions Journal of Passenger Cars: Electronic and Electrical Systems
Number: V114-7; Published: 2006-02-01
Number: V114-7; Published: 2006-02-01
References
- Department of Defense MIL-STD-882C. 1993
- Wysocki J. Debouk R. Nouri K. “Shared Redundancy as a Means of Producing Reliable Mission Critical Systems” Proceedings of the 50th Reliability and Maintainability Symposium (RAMS) Los Angeles, CA January 2004
- Debouk R. Wysocki J. “Assessing Required Levels of Redundancy for Composite Safety/Mission Critical Systems” Proc. SAE World Congress Detroit, MI March 2004
- Wysocki J. Debouk R. “Redundancy and Reliability Trade-offs for Safety/Mission Critical Systems” Proc. 22 nd International Systems Safety Conference Providence, RI August 2004
- Hammett R. Babcock P. “Achieving 10 -9 Dependability with Drive-by-Wire Systems” Proc. SAE World Congress Detroit, MI March 2003
- Nuclear Regulatory Committee NUREG 0492: Fault Tree Handbook 1981
- Wysocki J. Debouk R. “A Quantitative Figure of Merit Approach for Evaluating Safety/Mission Critical Systems” Proc. 21 st International Systems Safety Conference Ottawa, Canada August 2003
- Montgomery D.C. Design and Analysis of Experiments New York John Wiley & Sons 1991
- Trivedi K. Probability and Statistics with Reliability, Queuing, and Computer Science Applications Englewood Cliffs Prentice-Hall Inc. 1982