网络控制系统二维优先级和带宽调度策略研究  

Two-Dimensional Priority and Bandwidth Scheduling Method for Networked Control Systems

作　　者：张海艳[1,2] 陈其工[1,2] 魏利胜[1,2] 江明[1,2] 

机构地区：[1]安徽工程大学,安徽芜湖241000 [2]安徽检测技术与节能装置省级实验室,安徽芜湖241000

出　　处：《四川理工学院学报（自然科学版）》2013年第2期71-74,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：国家自然科学基金项目(61203033;61172131;61271377);安徽省自然科学基金项目(1208085QF124)

摘　　要：研究了一种基于二维优先级和带宽调节的网络控制系统调度问题。在调度器的设计过程中,为对优先级和带宽进行协同调度,将任务的执行次序通过任务的一级优先级和任务的二级优先级决定,并在二维优先级调度机制中进一步引入二维带宽控制策略,以根据用户需求实时动态调整网络带宽,从而改善网络环境,克服了现有调度策略的不足。最后,通过仿真分析验证了调度算法的有效性。A two-dimensional priority and bandwidth scheduling method is proposed for networked control systems. In the scheduler design process, the execution order of task is determined by both first task priority and second task priority so that task priority and bandwidth can be adjusted at the same time. Besides, the two-dimensional bandwidth control strategy is introduced in the two-dimensional priority scheduling mechanism so as to dynamically adjust network bandwidth in real time according to user needs. Thus the network environment can be improved and the deficiencies of the existing scheduling policy can also be overcome. At last, simulation example shows the effectiveness and superiority of the presented method.

关 键 词：网络控制系统 优先级调整 带宽分配 调度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]