Gateway Design And System Simulation For Integrated Control System Of Numerical Device In Machining Cell Based On EPA

There are many problems such as the coexisting of many different kinds ofcontrol systems, the disable execution of remote monitoring and remote maintenance,the difficulties of direct information exchanging and integration within discretemanufacturing enterprises, especially middle size and small ones. At the same time,the information in field area can't be collected, processed and applied in real time,which leads to the incapability of field control level to provide necessary fieldinformation for the information systems inside enterprise. The above problems havecaused the bottle-neck to advance the enterprise information system. A solution forIntergrated Control of Numerical Control Device (ICNCD) in Machining Cell (MC)based on industrial Ethernet was presented in this dissertation, in order to realizeefficient intergration of management system and field control system inside a discretemanufacturing enterprise. The main research work and achievements of thisdissertation are as following:1. The characteristic of communication interface and control mode of numericalcontrol device in MC of discrete manufacturing enterprise were analyzed; suitablenetwork for ICNCD was selected. Different connecting soluction was proposed forNumerical Control Devices which have different interfaces. EPA Protocol model,framework and schedule method were analyzed. The network framewok of ICNCD inMC based on industrial Ethernet was proposed.2. Gateway functions were analyzed for ICNCD in MC based on industrialEthernet. Hardware architecture of gateway was design gateway base on EPAprotocol. RTOS (Real Time Operation System) and LwIP protocol were transplanted,EPA protocol function was realized, and user program was developed.3. Simulation models based on EPA were realized, including gateway nodemodel and device node model, and related process model. The simulation model forICNCD system in MC and the simulation platform based on XML (eXtensibleMarkup Langusge) technique and OPNET Modeler were established. The performance of ICNCD system in MC based on EPA was studied by networksimulation.