Tolerating Failures of Continuous-Valued Sensors

Abstract

One aspect of fault-tolerance in process control programs is the ability to tolerate sensor failure. This paper presents a methodology for transforming a process control program that cannot tolerate sensor failures into one that can. Issues addressed include modifying specifications in order to accommodate uncertainty in sensor values and averaging sensor values in a fault- tolerant manner. In addition, a hierarchy of sensor failure models is identified, and both the attainable accuracy and the run-time complexity of sensor averaging with respect to this hierarchy is discussed. Keywords: Fault- tolerance, Process control systems, Real-time distributed systems.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1990
Accession Number
ADA227140

Entities

People

  • Keith Marzullo

Organizations

  • Cornell University

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  • Sensors

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Fields of Study

  • Engineering

Readers

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  • Parallel and Distributed Computing.