Design and reliability,availability,maintainability,and safety analysis of a high availability quadruple vital computer system  

作　　者：Ping TAN Wei-ting HE Jia LIN Hong-ming ZHAO Jian CHU 

机构地区：[1]State Key Laboratory of Industrial Control Technology ＆ Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China [2]hejiang Insigma-Supcon Co., Ltd., Hangzhou 310013, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2011年第12期926-935,共10页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project(No.2009BAG12A05) supported by the National Key Technology R&D Program of China

摘　　要：With the development of high-speed railways in China,more than 2000 high-speed trains will be put into use.Safety and efficiency of railway transportation is increasingly important.We have designed a high availability quadruple vital computer (HAQVC) system based on the analysis of the architecture of the traditional double 2-out-of-2 system and 2-out-of-3 system.The HAQVC system is a system with high availability and safety,with prominent characteristics such as fire-new internal architecture,high efficiency,reliable data interaction mechanism,and operation state change mechanism.The hardware of the vital CPU is based on ARM7 with the real-time embedded safe operation system (ES-OS).The Markov modeling method is designed to evaluate the reliability,availability,maintainability,and safety (RAMS) of the system.In this paper,we demonstrate that the HAQVC system is more reliable than the all voting triple modular redundancy (AVTMR) system and double 2-out-of-2 system.Thus,the design can be used for a specific application system,such as an airplane or high-speed railway system.With the development of high-speed railways in China, more than 2000 high-speed trains will be put into use. Safety and efficiency of railway transportation is increasingly important. We have designed a high availability quadruple vital computer （HAQVC） system based on the analysis of the architecture of the traditional double 2-out-of-2 system and 2-out-of-3 system. The HAQVC system is a system with high availability and safety, with prominent characteristics such as fire-new internal architecture, high efficiency, reliable data interaction mechanism, and operation state change mechanism. The hardware of the vital CPU is based on ARM7 with the real-time embedded safe operation system （ES-OS）. The Markov modeling method is designed to eva- luate the reliability, availability, maintainability, and safety （RAMS） of the system. In this paper, we demonstrate that the HAQVC system is more reliable than the all voting triple modular redundancy （AVTMR） system and double 2-out-of-2 system. Thus, the design can be used for a specific application system, such as an airplane or high-speed railway system.

关 键 词：Fault tolerant High availability quadruple vital computer （HAQVC） RELIABILITY AVAILABILITY MAINTAINABILITY and safety （RAMS） 

分 类 号：U28[交通运输工程—交通信息工程及控制]