基于RMS调度周期、非周期混合任务集的一种新方法*

提出了一种利用速率单调（RMS）算法确定计算机实时系统中整个任务集优先级的新方法。该方法利用数理统计的规律克服了普通RMS算法只能对系统中周期任务进行有效调度而不能对系统中的非周期任务进行有效调度的局限，扩大了RMS算法的适用范围，简化了非周期任务的处理过程，减小了系统开销。利用该方法在先进飞机电气综合控制与管理系统中进行了整个任务集的可调度性测试、验证，并给出了任务集的实际调度的验证实例。

New Method of Scheduling Periodic and Aperiodic Tasks via RMS

This paper advances a new method based on Rate-Monotonic Scheduling(RMS) which can be used to determine the priors of the tasks in computer real-time system.The method overcomes the fault that common RMS only adapts to periodic tasks by means of the theory about mathematical statistics,and it makes the process of handling aperiodic tasks simpler than traditional methods.Finally the schedulability of the whole tasks is calculated to make sure all the tasks can satisfy their deadlines and the result of experiment show that the schedule table based on the new method is schedulable.