利用多线程实现基于ARM的嵌入式网络控制系统仿真

An Implementation of ARM based NCS Simulation System Using Multithreads

为了研究真实网络对控制系统的影响,方便网络控制系统的研究人员进行网络控制课题的研究,有必要建立网络控制系统的仿真系统;ARM嵌入式处理器是目前被公认为业界领先的32位嵌入式RISC微处理器,在网络设备,工业控制等领域得到日益广泛的应用。本文介绍了一种基于ARM的网络控制系统仿真系统,利用该系统可以对基于TCP/IP的嵌入式网络控制系统进行仿真。该系统在S3C4530处理器上移植了uClinux操作系统,并在此基础上利用linux下的多线程技术实现被控对象的实时仿真和基于TCP/IP网络的数据传输。实验证明该仿真系统能够反映真实网络对控制系统的影响,实时性较好,可以满足大部分网络控制系统的仿真需要。

In order to study the effects which are exerted on the control system by the real network,and provide the convenience for study of Networked Control System,it is necessary to build a simulation system of Networked Control System..The embedded processor ARM is well known to be advanced 32-bit embedded RISC microprocessor,and it has been widely used in network equipements,industrial control etc.Tbis paper designs and implements a ARM-based simulation system.Using the simulation system ,TCP/IP protocol based Networked Control System can be simulated.In this system ,uClinux operating system is ported to the S3C4530 processor and with the support of uClinux,using multithreads technology ,the real-time simulation of the plant and TCP/IP network based communication are implemented.The result shows that the simulation system can reflect the effects on the control system which is caused by real network and has approving real-time performance,and can satisfy the needs of Networked Control System simulation.