NDLI: Separating essentials from incidentals: an execution architecture for real-time control systems

Content Provider	IEEE Xplore Digital Library
Author	Dvorak, D.L. Reinholtz, W.K.
Copyright Year	2004
Description	Author affiliation: Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA (Dvorak, D.L.; Reinholtz, W.K.)
Abstract	Source code for real-time control systems often intertwines several concerns such as functionality, data flow, control flow, synchronization, timing, and architectural style. This combination of concerns makes software harder to write correctly, harder to verify, and harder to reuse. This paper proposes an execution architecture that makes such systems more analyzable, verifiable, and reusable by separating "essential code" (software specific to the physical platform, the physical environment, and mission goals) from "incidental code" (all other software, particularly architectural support software for combining together essential components). This architecture elevates two forms of processing as first-class items: individual transformations of global state, as defined in pure functions, and rules of interaction of transformations, as managed by an engine that maintains certain invariants. Importantly, the explicit specification of these two forms of processing by systems engineers reduces sources of ambiguity in requirements
Sponsorship	IEEE Comput. Soc. Tech. Committee on Distributed Processing
Starting Page	301
Ending Page	304
File Size	1326957
Page Count	4
File Format	PDF
ISBN	076952124X
DOI	10.1109/ISORC.2004.1300392
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-14
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Control systems Computer architecture State estimation Object oriented modeling Hardware Software reusability Propulsion Laboratories Space technology
Content Type	Text
Resource Type	Article

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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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