【摘要】 提出了一种嵌入式数控系统的软硬件体系结构,该系统采用实时操作系统uCOS-II和ARM嵌入式微处理器构建。结合实时多任务操作系统的性能指标,分析了嵌入式实时操作系统uCOS-II的时间特性,并给出了uCOS-II中最长时间特性的计算方法,同时,在数控系统的平台上,测试了系统任务调度各个阶段所用时间,并对此系统的实时性和稳定性进行了分析。结果表明,基于uCOS-II和ARM所构建的嵌入式数控系统的实时性好,且具有低成本、高性能的特点,具有广泛的应用前景。更多还原

【Abstract】 This paper discusses a hardware and software architecture of embedded numerical control system.This system is built on uCOS-II and ARM.The timing specification of uCOS-II is analyzed based on the performance of RTOS.The method for getting the longest timing specification of uCOS-II is described.And the time of system schedule is measured.The paper also analyzes the system real-time performance and stability.The result indicates that this embedded numerical control system has perfect real-time character,low cost and high-performance.It has extensive application.更多还原