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Volume 2 Issue 4
October  1987
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Shi Weigeng, StephenY.H.Su. An Online Diagnosable Fault-Tolerant Redundancy System[J]. Journal of Computer Science and Technology, 1987, 2(4): 310-321.
Citation: Shi Weigeng, StephenY.H.Su. An Online Diagnosable Fault-Tolerant Redundancy System[J]. Journal of Computer Science and Technology, 1987, 2(4): 310-321.
shu

An Online Diagnosable Fault-Tolerant Redundancy System

  • Department of Electrical Engineering Worcester Polytechnic Institute;Department of Computer Science State University of New York

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  • Published Date: October 09, 1987
    Abstract
  • This paper presents an online diagnosable fault-tolerant system: N-unit t-fault tolerablesystem. The number of units N in the system can be either odd or even. The relationshipbetween N and t (the number of faulty units which can be tolerated) is presented. The approachof an optimum N- unit t-fault tolerable system is also given. As an example, a 4-unit 2-faulttolerable system is discussed. The reliability and mean time to failure of 4-unit 2-fault tolerablesystem are shown to be higher than 5MR (5-modular redundancy) and TMR (Triple ModulerRedundancy) system reliabilities. The amount of hardware components in a 4-unit t-faulttolerable system is simpler than 5MR. The complexity of switching circuit for N-unit t-faulttolerable system increases only linearly with respect of the number of modules. Our scheme isalso simpler than the hybrid redundancy system. Some theorems for the online diagnosis of N-unit t-fault systems are given and proved.
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    • References (5)
  • [1]
    F.P.Preparata, G.Metze and R.T.Chien, On the connection assignment problem of diagnosable system, IEEE Trans.Electronic Computers. EC-16:6 (1967), 848--854.
    [2]
    F.Barsi, F.Grandoni and P.Maestrini, A theory of diagnosability of digital systems, IEEE Trans.on Computers, C-25(1967), 585--593.
    [3]
    J.Savir, G.S.Ditlow and P.H.Bardell, Random pattern testability, IEEE Transactions on Computers, C-33:1 (1984), 79--90
    [4]
    Weigeng Shi. Adaptive testing for system diagnosis, Act Electronic Sinica, 11:6(1983), 28--38.
    [5]
    Weigeng Shi. Optimal connection for diagnosable systems, Chinese Journal of Computers, 8:1 (1985), 51-61. ……….
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