1994
DOI: 10.1109/12.324541
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A time redundancy approach to TMR failures using fault-state likelihoods

Abstract: Failure to establish a majority among the processing modules in a triple modular redundant (TMR) system, called a TMR failure, is detected by using two voters and a disagreement detector. Assuming that no more than one module becomes permanently faulty during the execution of a task, Re-execution of the task on the Same Hardware (RSHW) upon detection of a TMR failure becomes a cost-effective recovery method, because 1) the TMR s p e m can mask the effects of one faulty module while RSHW can recover from nonper… Show more

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Cited by 39 publications
(11 citation statements)
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“…This analysis is useful for the one-shot delay model in [84], where a single event-a long-lasting failure-may cause a dynamic failure. The authors of [84] used this approach to derive deadlines for numerous example control systems and then applied the knowledge of hard deadline to the design of error recovery in a triple-modular-redundant (TMR) controller computer [83].…”
Section: A Real-time Control Systemsmentioning
confidence: 99%
“…This analysis is useful for the one-shot delay model in [84], where a single event-a long-lasting failure-may cause a dynamic failure. The authors of [84] used this approach to derive deadlines for numerous example control systems and then applied the knowledge of hard deadline to the design of error recovery in a triple-modular-redundant (TMR) controller computer [83].…”
Section: A Real-time Control Systemsmentioning
confidence: 99%
“…For extremely high reliability, we may combine modular and temporal redundancy. That is, when no majority result is obtained on modular redundant processing units during the processing of an application, we can further explore temporal redundancy to re-execute it and increase the reliability instead of declaring a failure (Shin and Kim 1994).…”
Section: Introductionmentioning
confidence: 99%
“…Current trends try to hybridize TMR systems, to improve on system reliability. Time redundancy can be incorporated on TMR system by re-execution of the current task on detection of a fault, thus treating non-permanent module failure (Shin and Kim 1994). Information redundancy in the form of coding techniques can be introduced to a TMR system to increase both reliability and safety (Vaidya and Pradhan 1993).…”
Section: Introductionmentioning
confidence: 99%