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在高可靠、强实时环境中，双机系统的状态切换已成为影响系统实时性、可靠性的关键．该文主要提出考虑切换（切换成功率、切换时间）的强实时双机系统可靠性模型，并给出了提高强实时双机系统可靠性的方法．文中所提可靠性模型及提高可靠性的方法，目前已应用到某高可靠、强实时分布式系统中，为系统可靠性的精确估计、系统方案的论证提供了理论与方法上的依据
In the high reliability and strong real-time environment, the state switching of the dual-system has become the key to affect the real-time and reliability of the system. In this paper, a robust real-time dual-computer system reliability model considering handover (handover success rate, handover time) is proposed and a method to improve the reliability of the real-time dual-plane system is given. The reliability model mentioned in this paper and the method of improving reliability have been applied to a highly reliable and strong real-time distributed system, which provides a theoretical and methodological basis for the accurate estimation of system reliability and the demonstration of system solutions