Design And Realization Of Industrial Control System For Annealing Furnace

This thesis which takes the annealing furnace project of a high precision electronic copper factory as the background proposes an automatic controlling program based on the field bus and designs a communication network for the whole control system. It demonstrates a coordinated controlling strategy based on neural network according to the nonlinear coupling relationship between the temperature of the cover and the thermal cycling fan. Besides, this thesis develops a software which can monitor the condition of the system.The major content of the thesis is as follows:1. This thesis introduces the history of development at home and abroad, the characteristics and the direction of the research of the bell-type furnace, then, it introduces the basic structure, working principle and common controlling methods of the bell-type furnace control system.2. It designs the circuit of the furnace controlling system based on using S7-300 series PLC as the core controller and every controlling unit module which included in this system such as the temperature controlling and fan speed controlling .meanwhile, parts of the software of the controlling system based on Siemens STEP7 is developed.3. It designs the communication networks of the controlling system based on the PROFIBUS-DP field bus which includes the communication between S7-300 by PM120 and 3204 regulators, the communication between S7-300 and MM430 inverter, the communication between PLC and PLC and so on. Then it analyzes the method of Data exchange and implements the communication network of the entire controlling system.4. It builds an identification model based on BP neural network according to the coupling relation of the controlling system and trains the network model by using the real-time data of the industrial site and then has a simulation test, which tests the performance of the coordination controlling model.5. According to the actual needs of the industrial site, this thesis designs the PC monitoring software based on the Kingview 6.53 and completes the design of the interface of the instructions, real-time data, historical data and the alarm operator which used commonly in industrial production. what is more, it designs of the interface of the material tracking which is often used in the large assemblely line factory by means of the access functionality of the Kingview's database and Microsoft Office Access.