This paper introduces a real time multitask duplex system realized by cluster, and describes the basic flow, methods to decide machine fault, dual buffers technology to make switching.

• 在介绍实时高可靠应用系统传统处理模式的基础上,描述了一个利用集群技术实现的实时多任务双工系统所采用的基本工作流程、故障的判定方法和双缓冲切换技术。