Reliability and security analysis of 3-module redundancy system based on common mode fault

Abstract

Security computer is one of the core infrastructures for the rail traffic control system, and its function is to provide a highly reliable and secure computer's hardware and operating system platforms of information collection, processing, computing, judgments, communication and controlling for the security control system. This paper is connected with high reliability and high security design principles for rail transit security computer platform, uses Markov models, considers the fault detection rate, maintenance rate and the impact of common mode fault, then analyses TMR Computer's reliability and safety. The influences of faulty coverage ratio and maintenance rate on the reliability and security of the system are simulated with MATLAB. © 2012 Springer-Verlag Berlin Heidelberg.