Open AccessPartial TMR method for on‐orbit processors based on PageRank algorithm
Author(s) -
Yang Zhu,
Wang Hangyu,
Long Teng,
Ding Zegang,
Chen Liang
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.7113
Subject(s) - redundancy (engineering) , computer science , triple modular redundancy , algorithm , modular design , electronic circuit , sorting , engineering , electrical engineering , operating system
On‐orbit processors generally require reinforcement due to the harsh space radiation environment. Although the traditional full triple modular redundancy (TMR) method can effectively reinforce circuits, it requires excessive physical footprints and energy consumptions. To address this problem, this Letter proposes a general partial TMR method that can effectively reinforce a circuit. The method is based on the PageRank algorithm for sorting the importance of the triggers in a circuit, and the mean time between failure based on the dual logic cone model is used as the criterion to determine triggers that require redundancy under the partial TMR method. The arithmetic module of an optical image processing platform is tested to verify the effectiveness of the partial TMR method proposed in this Letter.