分布嵌入式实时系统容错调度算法

目的 提出一种针对分布嵌入式异构系统的容错调度算法,以保障系统的实时要求.方法 将每个任务复制为Ncf 1个版本,并在不同处理器及通信链路上来调度,优先调度关键路径上的任务.结果 通过任务复制方法 提高了系统可靠性,减小了调度长度,使任务满足容错要求,最多可以容忍Ncf个故障.结论 通过实例表明该算法满足实时需求,且既可容忍处理器故障.又能容忍通信链路故障.

A Scheduling Algorithm for Real-Time Distributed Embedded Systems

To study the vibrating property of sub-soiling shovel in practical working conditions and design the correct structure of the shovel, a modal experiment was conducted. The shovel was motivated in one point and the output signal was picked up in multiple-point using modal analysis method. The modal parameters of the sub-soiling shovel were identified by signal analysis software. The result shows that the movable rigidity in the middle of the sub-soiling shovel was small, within the range of rigidity vulnerable area. Thus, designed on the basis of modal analysis, the connection of sub-soiling shovel and the sub-soiler frame were improved. The first five modals increased by 62.6 percent and the deformation coefficients decreased by 13. 8 percent averagely. The shovel was strengthened entirely.