基于Wi-Fi的无线网络控制系统的仿真研究

近年来,以Wi-Fi为代表的无线局域网（Wireless Local Area Network,WLAN）技术不断发展和成熟,被广泛应用到各个领域。其中,将无线网络与传统控制系统融合起来,形成具备高移动性、可扩展性和灵活性等优势的无线网络控制系统（Wireless Networked Control Systems,WNCS）,成为控制界的研究趋势之一。针对基于Wi-Fi技术的无线网络控制系统进行了研究,利用TrueTime仿真工具箱以及MATLAB/Simulink仿真环境,构建了一个WNCS的仿真系统模型,设计了相应的PID控制器,并研究了网络传输速率、采样周期等网络性能指标对系统控制性能的影响。

Simulation of Wi-Fi Based on Wireless Networked Control System

In recent years, Wi-Fi has been developing greatly as the representative for the WLAN technology, it has been deployed in many application areas. In the control field, it has become a research frontier to integrate the wireless network with and the traditional control systems form the WNCS with many advantages, such as high-mobility, extendibility, flexibility and so on. In this paper, a Wi-Fi based on WNCS is studied. With the TrueTime toolbox and the MATLAB/Simulink environment, a simulation model of the WNCS is built, a corresponding PID controller is designed and the influence of network data rate, sample period on the system＇s control performance is analyzed.