Fault tolerant distributed process-control systems

Authors:
F. B. Bastani;C. V. Ramamoorthy
Affiliations:
Department of Computer Science, University of Houston - University Park, Houston, TX;Department of Electrical Engineering and Computer Sciences, Computer Science Division, University of California at Berkeley, Berkeley, CA
Venue:
ACM '87 Proceedings of the 1987 Fall Joint Computer Conference on Exploring technology: today and tomorrow
Year:
1987

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Abstract

Distributed processing is a cost-effective way of enabling critical process-control systems to react to emergencies in real-time. We discuss methods of making the system robust based on the use of self-stabilizing fault tolerance techniques. The control entities are organized in a hierarchical control structure. Upper level nodes deal with more abstract information and decompose the task of the system into a series of intermediate subtasks. These subtasks are further decomposed into a set of decentralized subtasks which are assigned to lower level nodes which operate without excessive coordination. Decentralized decomposition also makes the system inherently fault tolerant and simplifies the code. Other nodes are made fault tolerant using telescopic replication which provides economical redundancy without compromising system reliability.