工业以太网下网络测量平台仿真技术研究-控制科学与工程专业论文.docxVIP

工业以太网下网络测量平台仿真技术研究 STUDY ON SIMULATION TECHNIQUE OF NETWORK MEASUREMENT PLATFORM BASED ON INDUSTRIAL ETHERNET ABSTRACT With the expansion of network scale， with Ethernet as the representative of the communications technology is becoming a new highlight and new directions in the development of the industrial control networks. Ethernet， as the most widely used local area network technology recently， already has been an increasing number of applications in the field of industrial automation and process control， its advantages are becoming more prominent. Therefore， network measurement of Tndustrial Ethernet is the effective way of study the characteristics of Tndustrial Ethernet and obtains the network conditions. Tn order to study the influences which the features of the network impose upon the NCS (networked control systems)， our job is to establish and develop a multi-purpose simulation platform.Upon this platform， we can study the main parameters of the Ethernet， which are used in NCS. Firstly， we analyze the research background of network measurement and the significance of network measurement. Then the technology of network measurement and indicator system is deeply studied. The active and passive measurement method are particularly discussed and compared. Combination of theoretical knowledge of network measurement， is proposed the overall design program of network measurement platform based on clock synchronization， and design the hardware measurement platform under this program. Finally， the simulation technology on this network measurement platform is reached. As the network measurement platform itself is a network control system， this paper compared with the existing simulation software， and simulated the network measurement platform with Truetime toolbox. As the measuring platform is connected to the network， the Tndustrial Ethernet protocol is deeply studied， and simulated the main pa