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题名	现场总线控制系统实时建模、分析与调度方法的研究
作者	蒲维
学位类别	工学博士
答辩日期	2003-05-01
授予单位	中国科学院研究生院
授予地点	中国科学院自动化研究所
导师	邹益仁
关键词	现场总线控制系统 分布式实时系统 实时调度 遗传算法 混合优化策略 Fieldbus Control System Distributed Real-Time System Real-Time Scheduling Genetic Algorithm Hybrid Optimal Strategy
其他题名	Real-Time Modeling, Analysis and Scheduling of Fieldbus Control System
学位专业	控制理论与控制工程
中文摘要	现场总线技术适应工业控制系统的分散化、网络化和智能化的要求，在实 际应用的范围越来越广泛，逐渐成为工业控制领域的研究热点。作为一种典型 的分布式实时系统，现场总线控制系统实时建模、分析和调度理论还不成熟， 明显落后于实际应用。本文对基于现场总线的分布式实时系统的建模、分析和 调度理论进行较为深入的研究，为实际的工程应用提供了理论和方法的指导。 论文的主要内容和创新之处如下： 1．对基金会现场总线FF系统周期性任务提出类似于作业车间调度问题和基 于顺序图两种静态实时调度模型，采用遗传算法和混合遗传算法构造静态调度 表，满足了系统时间、顺序和资源的约束，并分析了系统的可调度性条件。 2．对FF系统非周期性任务提出轮询服务器和以响应时间作为性能优化指标 两种改进调度算法，提高了非周期任务的响应性能，并进一步考虑了调度时间 延迟对控制性能的影响。 3．对OPC服务器建立了混合任务的实时调度模型，应用动态设定非周期 性任务截止期的方法改进了动态调度算法，提高了系统的利用率和非周期性任 务的响应性能，并分析了可调度性条件和响应性能。 4．对实时数据库提出模糊实时调度模型，综合考虑了任务关键度和时间特 征的不确定性，设计了模糊实时调度器的结构和参数，提高了系统在过载情况 下的性能，并优化了调度器的参数。 5．对远程监控系统提出了基于服务质量QoS反馈的实时调度模型，在利用 率和错过率单回路控制的基础上建立了基于自适应切换的混合反馈控制结构， 设计了控制器参数和自适应切换的条件，在保证系统静态性能的同时提高了动 态响应性能。
英文摘要	Fieldbus control system(FCS), which meets the requirement of automation control system for distribution, network and intelligence ,is applied and becoming the hotspot of automation technology. As a typical distributed real-time system, the application of FCS is confined due to the lack of real-time modeling, analysis and scheduling theory. In this dissertation, the author tries to investigate the real-time modeling, scheduling and analysis of FCS, which will set up a good basis for design and realization of applications. Main works and innovations of this dissertation are as follows. 1.The similarly job shop scheduling problem and precedence graph based static real-time models are constructed for periodic tasks of Foundation Feildbus. Static scheduling table, which can meet the constraints of timing, precedence and resource, is solved with genetics and hybrid genetics algorithms and schedulability condition is discussed. 2.The polling server and response performance improved algorithms, which can evaluate the response performance of aperiodic tasks in FF, are put forward. The effect to control performance due to scheduling delay is taken into account. 3.Hybrid tasks real-time scheduling model is constructed for OPC server. The method can improve the processor utilization and response performance of aperiodic tasks with dynamic setting the deadline of aperiodic tasks, and schedulability is analyzed. 4.Fuzzy real-time scheduling model is put forward for real-time database. The structure and parameters of fuzzy scheduler, which can improve performance in the overloaded environments, are designed after considering the uncertain characteristics of tasks' importance and timing. 5.According to the real-time requirement of remote supervise and control system based on Internet, the real-time scheduling model which adapts the closed-loop feedback control of quality of service is constructed. The framework and parameters of controller based on hybrid feedback and self-adaptive switch is designed on the basis of the single-loop control of utilization and miss-ratio. The framework can improve dynamic performance and guarantee static performance.
语种	中文
其他标识符	726
内容类型	学位论文
源URL	[http://ir.ia.ac.cn/handle/173211/5748]
专题	毕业生_博士学位论文
推荐引用方式 GB/T 7714	蒲维. 现场总线控制系统实时建模、分析与调度方法的研究[D]. 中国科学院自动化研究所. 中国科学院研究生院. 2003.

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