面向SoC嵌入式实时操作系统的研究与实现

发布时间：2019-01-25 10:27

【摘要】：研究课题选题及研究内容:围绕LT-H10专用数控系统的SoC(系统级芯片)扩展控制单元,设计实现一种基于FPGA芯片的So C系统的嵌入式实时操作系统。LT-H10滚齿机数控系统采用基于ARM的系统结构,其处理器性能、资源等比以往基于x86的系统受到很大的限制,所以CPU的占用率也相对较高。针对LT-H10数控系统存在的问题与不足,同时为了降低ARM CPU的占用率,考虑把系统运行的主站控制功能迁移到底板FPGA Micro Blaze软核处理器上运行,本文提出了一种基于Micro Blaze软核处理器的So C_rt OS嵌入式实时操作系统的设计方案。在对实时操作系统和Micro Blaze软核处理器进入深入学习和研究的基础上,本文分别从抢占式任务调度、任务管理、任务间同步和通信、存储管理、中断5个方面对So C_rt OS系统进行了详细设计。从系统任务管理、中断管理、系统内存管理和系统外设管理四个方面着手,在Micro Blaze软核处理器上具体实现So C_rt OS系统,并完成了I/O读写管理在So C_rt OS系统中的具体实现。在完成So C_rt OS系统在Micro Blaze软核处理器上的具体实现的基础上,对系统进行了测试,结果表明实现在Micro Blaze软核处理器上的So C_rt OS系统可以正常稳定运行。为了验证So C_rt OS系统在任务调度时的任务切换速度是否能够满足原有LT-H10数控系统的应用需求,设计了一个对比系统:针对Micro Blaz So C_rt OS系统和ARM Linux系统设计任务调度算法对任务的切换时间进行测量和分析。实验结果表明So C_rt OS系统运行在Micro Blaze上之后,不仅可以稳定的运行,而且能够实现快速的任务切换,符合数控系统的实时性要求,可以满足LT-H10滚齿机控制系统的应用需要。
[Abstract]:Research topics and research contents: SoC (System-Level Chip) extended control unit around LT-H10 dedicated NC system, A kind of embedded real-time operating system of So C system based on FPGA chip is designed and implemented. The CNC system of LT-H10 hobbing machine adopts the system structure based on ARM. Its processor performance, resource and so on are more limited than those based on x86. So the occupancy rate of CPU is relatively high. In view of the problems and shortcomings of LT-H10 numerical control system, in order to reduce the occupancy rate of ARM CPU, the master station control function of the system is transferred to the bottom board FPGA Micro Blaze soft core processor to run. This paper presents a design scheme of So C_rt OS embedded real-time operating system based on Micro Blaze soft core processor. On the basis of in-depth study and research on real-time operating system and Micro Blaze soft core processor, this paper respectively from preemptive task scheduling, task management, task synchronization and communication, storage management, The So C_rt OS system is designed in detail in 5 aspects of interrupt. From four aspects of system task management, interrupt management, system memory management and system peripheral management, So C_rt OS system is implemented on Micro Blaze soft core processor. The realization of I / O read-write management in So C_rt OS system is also completed. On the basis of the implementation of So C_rt OS system on Micro Blaze soft core processor, the system is tested. The results show that the So C_rt OS system implemented on Micro Blaze soft core processor can run normally and stably. In order to verify whether the task switching speed of So C_rt OS system in task scheduling can meet the application requirements of the original LT-H10 CNC system, A comparative system is designed: task scheduling algorithm is designed for Micro Blaz So C_rt OS system and ARM Linux system to measure and analyze the task switching time. The experimental results show that the So C_rt OS system can not only run stably, but also realize fast task switching after running on Micro Blaze, which meets the real-time requirements of CNC system. It can meet the application needs of LT-H10 gear hobbing machine control system.
【学位授予单位】：中国科学院大学(中国科学院沈阳计算技术研究所)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP316.2

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