Fault-tolerant configuration of distributed discrete controllers

Author

Fujimoto, Yasutaka ; Sekiguchi, Takashi

Author_Institution

Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan

Volume

50

Issue

1

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

86

Lastpage

93

Abstract

This paper presents a fault-tolerant configuration for a multiple discrete control system. The distributed control nodes, such as programmable logic controllers, communicate over networks. The design methodology of an additional redundant controller using Galois field and an error-detecting code is proposed. The proposed method is implemented and tested on distributed controllers connected on a network. It is shown that the system is functional even if one of the controllers fails. From a reliability analysis, it is also shown that the proposed design method drastically improves the mean time to failure of the discrete control system.

Keywords

Galois fields; discrete time systems; distributed control; error detection; fault tolerance; programmable controllers; Galois field; discrete controller; distributed discrete controllers; error-detecting code; fault tolerance; fault-tolerant configuration; mean time to failure; multiple discrete control system; programmable logic controller; programmable logic controllers; redundant controller; reliability; reliability analysis; Control systems; Design methodology; Distributed control; Error correction codes; Failure analysis; Fault tolerance; Fault tolerant systems; Galois fields; Programmable control; Testing;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2002.804977

Filename

1174063