Study On Data Transmission Network Control Mode Of Network Control System

Networked Control System (NCS) connects the controllers, the sensors and the actuators through one shared networking to form feedback control loops. The development level of NCS plays a decisive part in industrial automatic process of a country. NCS is a product with combination of automation, computer network communication technology and innovation of information, but the communication network inserted in NCS has brought some issues such as data transmission delay, lost of packets, packets in disorder and etc. These problems make the NCS's control quality worse, and sometime make NCS become instability. The major challenges can lead to a progressive innovation on methodologies and control modes.In this thesis, one innovative mode called multi-route data transmission control mode is proposed to solve the related issues of NCS based on Internet. The mode has integrated the peer-to-peer network structure and system integration theory. The mode set the net peers to play the roles of router manager or data transform protocol agent. The route database is also set to record the proper routes while sending data packets. A progressive is presented while the net is divided to layers.The important related control science and network technologies are detailedly studied. There is also a software simulation system based on JAVA to demonstrate how the mode actually works. This system provides a good basic for running the mode in a true networked control system environment.