摘要
针对高速缓存引起的程序执行时间抖动对航天器控制软件任务调度造成的困难,提出一种基于循环调度的调度设计方法,该方法利用任务程序执行时间的概率分布设计具有不同可靠性的系统模式,通过模式切换,使处理器得到充分利用,同时能够提供一定的可靠性保障,为航天器控制软件的任务调度提供参考.
The task scheduling of spacecraft control software becomes more difficult due to the execution time jitter caused by cache. To deal with this problem, a scheduling design method is proposed based on cyclic executive. The probability distributions of execution times are used to design different system modes with different reliability. Through the mode changes, the processor can be sufficiently utilized and a certain extent degree of reliability is guaranteed. The proposed method can provide useful reference for the task scheduling of spacecraft control software.
出处
《空间控制技术与应用》
CSCD
北大核心
2017年第1期55-60,共6页
Aerospace Control and Application
基金
国家自然科学基金资助项目(91118007)
