Fault-tolerance experiments of the 'Hiten' onboard space computer

Takano, Tadashi; Yamada, Takahiro; Shutoh, K.; Kanekawa, Nobuyasu

doi:10.1109/ftcs.1991.146628

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…The duplication of self-checking module provides the concurrent error correction capability and can ensure the continuous operations. This is similar to the stepwise negotiating voting [9]. We compare the reliability of this design to the triple modulo redundancy (TMR) version that can provide the same capability.…”

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confidence: 99%

A Case Study of Self‐Checking Circuits Reliability

1998

VLSI Design

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In this paper, we analyze the reliability of self-checking circuits. A case study is presented in which a fault-tolerant system with duplicated self-checking modules is compared to the TMR version. It is shown that a duplicated self-checking system has a much higher reliability than that of the TMR counterpart. More importantly, the reliability of the self-checking system does not drop as sharply as that of the TMR version. We also demonstrate the trade-offs between hardware complexity and error handling capability of self-checking circuits. Alternative self-checking designs where some hardware redundancies are removed with the lost of fault-secure and/or self-testing properties are also studied.

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confidence: 99%

A Case Study of Self‐Checking Circuits Reliability

1998

VLSI Design

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“…We apply well-known fault-tolerance techniques in a different context: How much tolerance can be provided against errors induced by space radiation using redundant microcontrollers with a minimum amount of additional hardware? Most previous work is based on microprocessor designs where the basic computers can be customized by adding a significant amount of circuitry for fault-tolerance, e.g., ECC in memory and custom hardware voters [6]. We achieved substantial improvements in coverage using only an external power switch, isolation resistors, and a couple of lowdensity programmable chips.…”

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confidence: 87%