Reliability Analysis of Safety Critical Computer System Considering Common Cause Failure
Volume 7, Issue 1, February 2019, Pages: 18-23
Received: Mar. 7, 2019;
Published: Mar. 8, 2019
Views 571 Downloads 47
Zhao Deliang, School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Xu Hongze, School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
The rail transit operation control system and nuclear reactor control system are extremely high for safety and reliability, especially the high speed maglev of more than 600 kilometers per hour. Therefore, the effect of common cause failure on the reliability of safety critical computer must be considered.The safety critical system is the key of the above-mentioned safety demanding system. In this paper, the structure and working principle of a safety critical computer with two-out-of-three and double two-out-of-two are analyzed.Considering the common cause failure and maintenance rate, by using Markov model, the reliability models of safety critical computer system with with two-out-of-three and double two-out-of-two are established. The simulation results show that the existence of common cause failure greatly reduces the reliability of the system. The maintenance rate can improve the reliability of the system. At the same time, considering the common cause failure and the maintenance rate, it is proved that the reliability of the two-out-of-three safety critical computer system is higher than double two-out-of-two safety critical computer system. Therefore, it provides theoretical support for the design of the subsequent differentiated security computer platform.
Reliability Analysis of Safety Critical Computer System Considering Common Cause Failure, Science Discovery.
Vol. 7, No. 1,
2019, pp. 18-23.
员春欣, 江建慧.安全关键计算机系统[M].北京:中国铁道出版社, 2003, 154-156.
K. Mallikarjunudu, G. Venkatarami Reddy, Reliability analysis of Shared Load K Out of n: G System in the Presence of Non Lethal Common Cause Shock Failures,Journal of Computer and Mathematical Science, Volume 9, 2018, Pages 6-10.
Jose E. Ramirez-Marquez, David W. Coit, Optimization of system reliability in the presence of common cause failures, Reliability Engineering & System Safety, Volume 92, 2007, Pages 1421-1434.
J.K. Vaurio, Common cause failure probabilities in standby safety system fault tree analysis with testing-scheme and timing dependencies Reliab Eng Syst Saf, 79, 2003, Pages 43-57.