基于事件驱动机制的网络控制系统设计综合

发布时间：2018-01-05 14:35

  本文关键词：基于事件驱动机制的网络控制系统设计综合　出处：《江苏大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 网络诱导时延 数据丢包 事件触发机制 网络控制系统 协同设计

【摘要】：随着信息技术日新月异地变化,传统的控制系统无法满足实际生产地需求,尤其是在工业领域。网络控制系统(network control system,NCSs)具有便于资源共享、易于安装维护、快速故障诊断等诸多优点,得到广泛的应用。然而,网络的引入将导致网络诱导时延、数据丢包、通信限制等不良因素,从而对控制系统性能产生不利后果,这使得控制系统综合分析研究面临极大挑战。为了使其满足实时性需求,充分的利用网络资源,基于事件驱动机制的研究受到了越来越多的关注。在充分考虑网络诱导时延和数据丢包的基础上,本文研究了基于事件驱动机制的网络控制系统控制器设计问题,具体安排如下:首先,概述了基于事件触发机制的网络控制系统的研究进展与成果,介绍了考虑网络诱导时延、丢包等特性的网络控制系统的控制器设计问题的研究现状,给出了本文中需要用到主要引理以及符号说明。其次,对仅存在网络诱导时延,不存在数据丢包的理想化网络控制系统,引入事件触发通信策略,研究了相应控制器设计问题。考虑了网络控制系统中最大允许通信时延的上界,得到相应闭环控制的模型。构造新的Lyapunov-Krasovskii泛函,给出时延NCSs的控制器设计。然后,针对具有非均匀丢包的网络控制系统,研究了事件驱动机制的丢包补偿切换控制器设计问题。考虑NCSs丢包非均匀分布的特性,针对两种情况采用不同的切换控制器,建立基于事件驱动机制的网络控制系统闭环系统模型,通过构造新的Lyapunov-Krasovskii泛函,并利用Jensen不等式方法,进行相关稳定性的分析,给出丢包非均匀分布NCSs控制器设计。最后,综合考虑了控制系统的性能参数以及网络动态性能对事件触发条件的影响,给出了事件触发通信机制和网络控制系统的采样误差模型,研究了网络控制系统中事件触发控制和控制器反馈增益协同设计的方法。这种设计方法考虑到了网络传输器的数据包丢失和传输时延,从有无丢包两方面的情况分析,用以上方法来维持了系统所需的H∞性能,并且更好地利用了网络资源。通过三个数值例子验证了本文提出方法的优点。
[Abstract]:With the rapid change of information technology, the traditional control system can not meet the actual production needs. Especially in the industrial field. Network control system NCSs) is easy to share resources, easy to install and maintain. Rapid fault diagnosis and many other advantages have been widely used. However, the introduction of network will lead to network induced delay, data packet loss, communication constraints and other adverse factors, which will have adverse consequences on the performance of the control system. This makes the control system comprehensive analysis and research face a great challenge. In order to make it meet the real-time requirements, make full use of network resources. The research of event-based mechanism has attracted more and more attention. Based on the consideration of network-induced delay and data packet loss. In this paper, the controller design of network control system based on event-driven mechanism is studied. The detailed arrangement is as follows: firstly, the research progress and achievements of network control system based on event trigger mechanism are summarized. This paper introduces the research status of controller design of networked control system considering the characteristics of network-induced delay and packet loss. The main Lemma and symbolic explanation are given in this paper. Secondly. For the idealized networked control system with only network-induced delay and no data packet loss, an event-triggered communication strategy is introduced. The problem of controller design is studied, and the upper bound of maximum allowable communication delay in networked control system is considered. The corresponding closed-loop control model is obtained. A new Lyapunov-Krasovskii functional is constructed and the controller design of the time-delay NCSs is given. For the network control system with non-uniform packet loss, the problem of the loss compensation switching controller with event-driven mechanism is studied, and the characteristics of the non-uniform distribution of NCSs packet loss are considered. The closed loop system model of network control system based on event-driven mechanism is established by using different switching controllers in two cases, and a new Lyapunov-Krasovskii functional is constructed. The Jensen inequality method is used to analyze the relative stability, and the design of NCSs controller with non-uniform distribution of packet loss is given. Finally. The performance parameters of the control system and the influence of the network dynamic performance on the event triggering conditions are considered synthetically. The event trigger communication mechanism and the sampling error model of the network control system are given. The cooperative design method of event trigger control and controller feedback gain in networked control system is studied, which takes into account the packet loss and transmission delay of the network transmitter. In this paper, the H 鈭，

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