资源受限的无线网络控制系统建模与滤波器设计

发布时间：2018-01-14 12:14

  本文关键词：资源受限的无线网络控制系统建模与滤波器设计　出处：《安徽工程大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 无线网络控制系统 资源受限 丢包 能量受限 滤波器

【摘要】：随着网络通信技术、控制理论等快速发展,无线网络通信技术构筑的无线网络控制系统(Wireless Networked Control Systems,WNCSs)在实际工业系统中得到了越来越广泛的应用。WNCSs就是利用无线通信网络将控制系统中的传感器、控制器(滤波器)和执行器连接形成闭环系统,它具有低成本、易于安装维护、高性能等优点,然而将无线网络引入到工业控制中,会带来信道资源受限、随机丢包、诱导时延等问题,使系统的性能分析和设计变得复杂。因此,研究资源受限的无线网络控制系统滤波技术,具有很大的发展前景和推广价值。本文将重点研究WNCSs模型构建以及滤波器设计,并进行相关的数值仿真。具体研究内容如下:首先,针对无线网络控制系统存在信道受限和外部噪音干扰问题,研究了一类无线网络控制系统H∞滤波器设计方法。利用离散马尔科夫链模型刻画无线网络信道受限传输数据过程,推导出闭环WNCSs模型,并设计模型依赖H∞滤波器,同时给出滤波器参数矩阵求解方法。其次,同时考虑信道受限和随机丢包无线网络控制系统l2/l∞滤波器设计。利用对数量化器量化传感器量测数据,并采用离散Markov链描述无线信道接通状态,以伯努利随机序列搭建多通道丢包模型,从而推导出闭环WNCSs模型以及系统随机稳定条件下的l2/l∞滤波器参数。最后,从节能优化角度探讨了无线网络控制系统H∞滤波器设计。利用时变采样策略和降频发送策略,以降低传感器采样和发送期间能量消耗,运用李雅普诺夫函数和线性矩阵不等式技术推导出闭环WNCSs的随机稳定性条件,同时设计H∞滤波器。
[Abstract]:With the rapid development of network communication technology, control theory and so on. Wireless Networked Control Systems, a wireless network control system based on wireless network communication technology. WNCSs) has been more and more widely used in industrial systems. WNCSs use wireless communication networks to control the sensors in the system. The controller (filter) and actuator are connected to form a closed-loop system, which has the advantages of low cost, easy installation and maintenance, high performance, etc. However, introducing wireless network into industrial control will bring limited channel resources. The problem of random packet loss and induced delay makes the performance analysis and design of the system complex. Therefore, the filtering technology of wireless networked control systems with limited resources is studied. This paper will focus on the WNCSs model construction and filter design, and carry out the relevant numerical simulation. The specific research contents are as follows: first. For wireless network control system, there are some problems such as channel limitation and external noise interference. The design method of H 鈭，

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