Simulation research of networked control system based on Ethernet and Matlab

Networked control system, as a hotspot in the research fields of control theory and control engineering applications, is widely concerned by researchers at home and abroad. The expansibility, maintainability and reliability of industrial process control system can be greatly improved with the application of Ethernet technology. In this paper, the network controller and the controlled object are set in the different computers in the net and a simulation platform of networked control system based on Ethernet is designed, which uses the mixed programming of Visual C++ and Matlab. This kind programming adopts TCP/IP protocol and uses Socket to encapsulate into DLL so as to realize the transmission of network data. And then build simulation models in the Matlab environment on two computers at the same time, whose communication are worked by calling packaged Socket function. Through the simulations of typical controlled object in the process of industrial production, the feasibility and effectiveness of the control scheme has been proved.