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Journal ArticleDOI

Programmable Control of a Chemical Reactor Using a Fault Tolerant Computer

John H. Wensley, +1 more
- 01 Nov 1982 - 
- Iss: 4, pp 258-264
TLDR
The use of fault tolerance for the computer control to provide a level of reliability previously unachievable with standard computer control systems is described.
Abstract: 
This paper discusses the operation of a chemical reactor and particularly the need for highly reliable instrumentation and control for critical processes. It describes the use of fault tolerance for the computer control to provide a level of reliability previously unachievable with standard computer control systems. The provision of highly reliable interface equipment to the reactor itself is described and approaches are presented for solving the problem of faults in the sensors and actuators. The paper discusses a specific example chemical reactor and the benefits that are achievable using a fault tolerant control computer system.

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Citations
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Journal Article

Voting algorithms

Behrooz Parhami
- 01 Dec 1994 - 
TL;DR: This paper presents efficient n-way plurality and threshold voting algorithms based on the type of voting (exact, inexact, or approval), rule for output selection (plurality or threshold) and properties of the input object space (size and structure).
Journal ArticleDOI

Fault-Tolerant Microprocessor-Based Systems

Barry W. Johnson
- 01 Nov 1984 - 
TL;DR: This tutorial outlines the causes of faults and the basic techniques for dealing with them and describes the steps to take to deal with them.
Journal Article

Voting networks

Behrooz Parhami
- 01 Aug 1991 - 
TL;DR: Designs of hardware voters are presented that can be easily pipelined to accommodate extremely high data rates and the rich theory developed for the analysis and synthesis of parallel/pipelined sorting networks directly benefits the design process.

Guaranteeing fault tolerance through scheduling in real-time systems

Daniel Mosse, +1 more
TL;DR: This thesis demonstrates how time redundancy can be used in conjunction with hardware and software redundancy to tolerate a variety of faults in real-time systems by incorporating time redundancy.
Journal ArticleDOI

A fault-tolerant multiprocess controller for magnetic bearings

S.W. Yates, +1 more
- 01 Jul 1988 - 
TL;DR: A fault-tolerant microprocessor system designed to provide digital control for an active magnetic bearing is described and much effort was expended to make it general enough for applications to a wide range of real-time applications.
References
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SIFT - Design and analysis of a fault-tolerant computer for aircraft control. [Software Implemented Fault Tolerant systems]

J. H. Wensley, +7 more
Journal ArticleDOI

SIFT: Design and analysis of a fault-tolerant computer for aircraft control

J. H. Wensley, +7 more
TL;DR: SIFT as discussed by the authors is an ultra-reliable computer for critical aircraft control applications that achieves fault tolerance by the replication of tasks among processing units, and it uses a specially designed redundant bus system to interconnect the processing units.
Journal ArticleDOI

Synchronization and Matching in Redundant Systems

Davies, +1 more
- 01 Jun 1978 - 
TL;DR: A novel mutual feedback technique, called "synchronization voting," is introduced that does not have vulnerability to common-point failures and is described in the appendix—a fault-tolerant crystal-controlled clock.
Proceedings ArticleDOI

SIFT: software implemented fault tolerance

John H. Wensley
TL;DR: Many computer applications have stringent requirements for continued correct operation of the computer in the presence of internal faults, and these computers are termed "fault tolerant"; examples of applications are found in the aerospace industry, communication systems, and computer networks.
Proceedings ArticleDOI

The design, analysis, and verification of the SIFT fault tolerant system

John H. Wensley, +3 more
TL;DR: An abstract, Markov-like model is used to describe the reliability behavior of SIFT, a fault-tolerant computer in which fault tolerance is achieved primarily by software mechanisms.