三个Buffers切换到达系统的混合系统建模和控制  

Hybrid State Based Modeling and Control for a Switched Arrival System with Three Buffers

作　　者：杨根科[1] 吴智铭[1] 

机构地区：[1]上海交通大学自动化系,上海200030

出　　处：《上海交通大学学报》2001年第2期264-267,共4页Journal of Shanghai Jiaotong University

基　　金：中国博士后科学基金!资助项目 ;国家自然科学基金!资助项目 (6 0 0 740 11F0 3)

摘　　要：采用被服务 Buffer编号为离散标识 ,Buffer中待处理任务数为连续状态 ,建立了系统的代数微分方程模型 .提出了三个 Buffers切换到达系统不稳定周期轨道的一种基于混合状态的镇定控制方法 .当 Server服务于一个 Buffer时 ,以此状态下在连续周期轨道上对应的 2个顶点张成的一维线形子流型为滑动目标 ,仅通过系统许可的对极限连续处理时间的控制 ,使系统镇定于周期轨道 .并从系统的混合模型角度 ,分析了镇定方法的鲁棒性 .Considering a switched arrival system with three buffers, and assuming that the input rate of work and processing time per unit are constant, it was shown that the system is chaotic. With the number of being serviced Buffer selected as discrete index, and the work number of Buffer as continuous state, an algebra-differential equation of switched arrival system was naturally developed. The paper proposed a hybrid state based control method for stabilizing an unstable periodic orbit by controlling controllable continuous limit processing time, referring to the geometrical property of the system behavior and employing sliding-mode approach. For some being serviced buffers, the continuous limit processing time is selected such that the continuous state slides onto a 1-dimension manifold spanned by two succession vertexes of the periodic orbit. Finally, it shows that the stabilizing policy is robust.

关 键 词：切换到达系统 混沌 镇定 滑动模 混合系统 混合控制系统 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置]