真航向测量系统接口箱实时任务调度

实时性是工业控制和军事应用的关键。文章分析了某型潜艇真航向测量系统的接口箱硬件特点及相应的软件要求。在接口箱系统的单任务操作系统下，需要一种任务调度策略来实现多任务实时性。所以在此前提下，文章对常规的RM调度和EDF调度策略进行了分析研究，设计实现了一种在接口箱的单任务弱实时操作系统下，可以进行多任务动态实时调度的策略。该策略结合RM和EDF两种方法的特点，既考虑到任务的频度，同时兼顾任务的重要程度，接口箱的工程实践证明了该方法的合理性、有效性。

Real-Time Task Scheduling Method ina Navigation Data Acquisition Equipment

Real time capability is crucial in industry control and military applications. In this paper, the characteristics of the navigation data acquisition equipment used on some submarine are analyzed and the task scheduling demand of this set is rigorous. According to the system hardware and its single task OS environment, a special task scheduling technique should be adopted to meet the high real time request. Based on the common RM and EDF methods, a dynamic task scheduling method is designed and realized in this system, which combines the merits of the RM and EDF. This task scheduling method considers the urgency of system tasks and also take the frequency of scheduling tasks into account. The effect of this task scheduling method is validated in this application.