A microprocessor-based duplex fault-tolerant controller for industrial process control

Author

Li Zhaohui ; Ye Luqing ; Wei Shouping ; Malik, O.P. ; Hope, G.S. ; Hancock, G.C.

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Hubei, China

Volume

16

Issue

2

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

68

Lastpage

73

Abstract

Reliability is one of the fundamental considerations in the design of industrial control equipment. A microprocessor-based hybrid duplex fault-tolerant system (HDS) is proposed which has high reliability to meet this demand although its hardware structure is simple. The hardware configuration of HDS and the fault tolerance of this system are described. The switching control strategies in HDS are studied in detail. Disputes between two subsystems are avoided due to the highly modular structure and the efficient fault detection. Reliability estimation methods for this system are also developed. The implementation of fault tolerance in HDS is software intensive. This system is specially designed for industrial process control.

Keywords

controllers; fault tolerant computing; microcomputer applications; process computer control; reliability; HDS; fault detection; hardware configuration; hybrid duplex system; industrial process control; microprocessor-based duplex fault-tolerant controller; modular structure; reliability estimation; switching control strategies; Fault tolerance; Fault tolerant systems; Hardware; Software; Switches;

fLanguage

English

Journal_Title

Electrical and Computer Engineering, Canadian Journal of

Publisher

ieee

ISSN

0840-8688

Type

jour

DOI

10.1109/CJECE.1991.6593294

Filename

6593294