NDLI: Risk assessment of real time digital control systems

Content Provider	IEEE Xplore Digital Library
Author	Hecht, M. Buettner, D. Hellrung, J.
Copyright Year	2006
Description	Author affiliation: Aerosp. Corp., Los Angeles, CA (Hecht, M.; Buettner, D.)
Abstract	This paper describes stochastic methods for assessing risk in integrated hardware and software systems. The methods assess evaluate availability, outage probabilities, and effectiveness-weighted degraded states based on data from measurements with a specified confidence level. System-level reliability/availability models can also identify the elements where failure rate, recovery probability, or recovery time improvement will provide the greatest benefit. The validity of this approach is determined by the extent to which the system failure behavior conforms to a stochastic process (i.e., random, non-deterministic failures). Evidence from large studies of other high availability computer systems provides substantial evidence of such behavior in mature systems. The approach is limited to the systems with failure rates higher than $10^{-6}per$ hour and the availability below 0.999999, i.e., below safety grade. To assess safety critical systems, the risk assessment method described here can be used as an adjunct for other approaches described in various industry standards that intended to minimize the likelihood that deterministic defects are introduced into the system design
Starting Page	409
Ending Page	415
File Size	262701
Page Count	7
File Format	PDF
ISBN	1424400074
ISSN	0149144X
e-ISBN	1424400082
DOI	10.1109/RAMS.2006.1677409
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Risk management Real time systems Digital control Availability Safety Stochastic systems Hardware Software systems Degradation Stochastic processes
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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