Title :
A new low cost distributed fault tolerant architecture for process control applications
Author :
Hecht, Myron ; Agron, Jeffrey ; Hecht, Herbert
Author_Institution :
SoHaR Inc., Los Angeles, CA, USA
Abstract :
A distributed fault tolerant system for process control based on an enhancement of the distributed recovery block has been implemented and integrated into a chemical processing system. Fault tolerance provisions in the system cover software faults by use of the distributed recovery block (DRB); hardware faults by means of replication, loose coupling, periodic status messages, and restart capability; and network faults by means of replication and diverse interconnection paths. Maintainability is enhanced through an automated restart capability and logging function resident on a system supervisor node
Keywords :
distributed processing; fault tolerant computing; process computer control; ARCNET; automated restart; chemical processing system; distributed fault tolerant system; distributed recovery block; diverse interconnection paths; hardware faults; logging function; loose coupling; low cost distributed fault tolerant architecture; maintainability; network faults; periodic status messages; process control applications; replication; software faults; system supervisor node; Actuators; Chemical processes; Control systems; Costs; Fault tolerance; Fault tolerant systems; Hardware; Process control; System software; Testing;
Conference_Titel :
Southeastcon '91., IEEE Proceedings of
Conference_Location :
Williamsburg, VA
Print_ISBN :
0-7803-0033-5
DOI :
10.1109/SECON.1991.147748
