| Design and RAMS Analysis of a Fault-Tolerant Computer Control System |
| |
| 引用本文： | 王帅,吉吟东,董炜,杨士元. Design and RAMS Analysis of a Fault-Tolerant Computer Control System[J]. 清华大学学报, 2007, 12(Z1): 116-121 |
| |
| 作者姓名： | 王帅 吉吟东 董炜 杨士元 |
| |
| 作者单位： | Department of Automation Tsinghua University，Tsinghua National Laboratory for Information Science and Technology，Beijing 100084，China，Tsinghua National Laboratory for Information Science and Technology，Tsinghua National Laboratory for Information Science and Technology，Department of Automation，Tsinghua University，Beijing 100084，China，Beijing 100084，China，Beijing 100084，China，Beijing 100084，China |
| |
| 摘 要： | This paper presents a fault-tolerant computer system. It is designed as a double 2-out-of-2 architecture based on component redundant technique. Also, a quantitative probabilistic model is presented for evaluating the reliability, availability, maintainability and safety (RAMS) of this architecture. Hierarchical modeling method and Markov modeling method are used in RAMS analysis to evaluate the system characteristics. The double 2-out-of-2 system is compared with the other two systems, all voting triple modular redundancy (AVTMR) system and dual-duplex system. According to the result, the double 2-out-of-2 system has the highest dependability. Especially, the system can satisfy the safety integrity level (SIL) 4, which means the system's probability of catastrophic failure less than or equal to 10-8 per hour, therefore, it can be applied to life critical systems such as high-speed railway systems.
|
Design and RAMS Analysis of a Fault-Tolerant Computer Control System |
| |
| WANG Shuai,JI Yindong,DONG Wei,YANG Shiyuan. Design and RAMS Analysis of a Fault-Tolerant Computer Control System[J]. Tsinghua Science and Technology, 2007, 12(Z1): 116-121 |
| |
| Authors: | WANG Shuai JI Yindong DONG Wei YANG Shiyuan |
| |
| Abstract: | This paper presents a fault-tolerant computer system. It is designed as a double 2-out-of-2 architecture based on component redundant technique. Also, a quantitative probabilistic model is presented for evaluating the reliability, availability, maintainability and safety (RAMS) of this architecture. Hierarchical modeling method and Markov modeling method are used in RAMS analysis to evaluate the system characteristics. The double 2-out-of-2 system is compared with the other two systems, all voting triple modular redundancy (AVTMR) system and dual-duplex system. According to the result, the double 2-out-of-2 system has the highest dependability. Especially, the system can satisfy the safety integrity level (SIL) 4, which means the system's probability of catastrophic failure less than or equal to 10-8 per hour, therefore, it can be applied to life critical systems such as high-speed railway systems. |
| |
| Keywords: | double 2-out-of-2 system availability maintainability reliability safety (RAMS) safety integrity level (SIL) hierarchical modeling method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
