Title :
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
fDate :
4/1/1991 12:00:00 AM
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;
Journal_Title :
Electrical and Computer Engineering, Canadian Journal of
DOI :
10.1109/CJECE.1991.6593294
