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A class of inherently fault tolerant distributed programs

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3 Author(s)
Bastani, F.B. ; Dept. of Comput. Sci., Houston Univ., TX, USA ; I-Ling Yen ; Ing-Ray Chen

Software for industrial process-control systems, such as nuclear power plant safety control systems and robots, can be very complex because of the large number of cases that must be considered. A design approach is proposed that uses decentralized control concepts, and is based on E.W. Dijkstra's concept of self-stabilizing systems (1974). This method greatly simplifies the software, so that its correctness can be verified more easily. A simple control system is described for a simulated robot that is tolerant of partial failure of controllers and mechanisms, and permits online repair and enhancement of the control functions.<>

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Software Engineering, IEEE Transactions on  (Volume:14 ,  Issue: 10 )