Study On The On-line Heating Control System Of The Chamber Of TLJ630Continuous Extrusion Machine

At the present time, there has a hitherto unknown challenge to wide copper production and large diameter aluminum coating process in the TLJ630continuous extrusion machines. First of all, for the production of wide copper, due to the influence of temperature, it is difficult for the billet to flow to both sides, and thus to filling the phenomenon of discontent; secondly, due to non-uniformity chamber temperature, resulted in the difference of temperature between the mold components in large diameter coating process, and resulting it is not uniformity for the forming size in the process of aluminum coating. In order to tackle the key problem to solve the production process, the author has designed a set of on-line heating about TLJ630continuous extrusion machine’s control system, combined the production process and characteristics of the TLJ630continuous extrusion machines and the theory of intelligent control. The intelligent control system based on fuzzy algorithm advanced in combination with the classic PID control theory, realizes on-line heating control, which has the characteristics of fast response, excellent anti interference ability and strong robustness.Design of intelligent control system is completed, to realize the algorithm by PLC in industrial production. Programmable logic controller (PLC) is the most widely automation circulation control device now, and is an important control components for automation, intelligent control of industrial process. PLC that will be the traditional relay control technique is combined with computer technology, communication technology, and use the modular to design, has strong control function, high reliability, flexible use and other characteristics, and be widely used in industrial production.In this paper, based on a detailed analysis on the process of TLJ630continuous extrusion machines, firstly, proposed a heating mode to the extruding machine by the resistance heating, and Based on theoretical study, power heating system is calculated in order to meet the system requirements. Secondly discussed the industrial modeling method, and to establish the mathematical model for on-line heating system of TLJ630continuous extrusion machines chamber based on many specific experiments. Thirdly the fuzzy PID controller has been designed based on the theoretical knowledge of fuzzy mathematics, At the same time, detailed introduces the establishment of the control rules in the controller and To solve the query table, as well as the research setting principle analysis of various process control parameters and tuning method. Fourthly in order to study on control performance of the control method and to judge the rationality of design, the response speed of the system, the anti-jamming capability and robustness are analyzed through MATLAB simulation toolbox of simulink, and compared with conventional PID controller, verify the superiority of fuzzy PID control system of the design. Finally, by using S7-200PLC programming Siemens and related software, the fuzzy PID control is applied to the PLC and analysis the on-line heating control experiment of preheating on chamber and large diameter aluminum coating in production process.The simulation results and experimental data, shows that the design of the on-line heating control system of the TLJ630continuous extrusion machines chamber to achieve the control performance index of predetermined, and to meet the production requirements.