Research On Wire Diameter Control System Of Wire And Cable Production Line

Wire diameter is one of the important indexes to measure the quality of wire and cable.With the development and progress of science and technology,the precise line diameter has been paid more and more attention in many fields.At present,aerospace,communications,automotive manufacturing and other fields of wire and cable used for wire diameter is a high degree of accuracy requirements.Therefore,it is important to research the diameter control system of wire and cable production line to decide the precision of wire diameter.For the precise control of the line diameter,there are three deficiencies in the conventional PID control method of the wire diameter control system.1.For manual control of the technical parameters of the model,because technicians can not adjust the control parameters according to the production status,it will lead to wire and cable product line diameter can not meet the requirements of production standards;2.The conventional PID control method is difficult to overcome the interference effect of the system,so the accuracy of the line diameter is difficult to be controlled;3.The conventional PID control method can not make the production system quickly stable,and it will lead to the insulation layer of the wire and cable(insulation sheath)in the production of the first part of the system due to the regulation of the process will result in a waste of insulating materials.In view of the shortcomings of the conventional PID control and based on the two aspects of precise line control production and energy saving,this paper presents a composite control method for the line diameter control system.The specific research contents can be summarized as follows.(1)In the analysis of production line of wire and cable structure,extruder device and extrusion process,combined with the actual line size control system principle,with reference to related research papers,the mathematical model of the system on line size control are introduced;(2)In view of the two problems that the control parameters of the conventional PID control are difficult to be adjusted in real time and the transition time is long,the ACO(Ant Colony Optimization Algorithm,ACO)control method is introduced based on the conventional PID control method,and a ACO-PID control method is introduced.We use the characteristics of ACO parallel computing to achieve online optimization of PID control parameters.On the one hand,to change the conventional control mode only by manual adjustment of the control parameters of the technical personnel to improve the overall line diameter of wire and cable products compliance rate;On the other hand,it can shorten the time of adjusting the system and overcome the regulation of the process caused by the system hysteresis;(3)Based on the ACO-PID control method,aiming at the disturbance effect of the line diameter control system,the KF(Kalman Filtering Algorithm,KF)is introduced to increase the anti-jamming performance of the control system,and a controller based on the ACO-KF-PID compound control algorithm is designed.Based on MATLAB simulation analysis,and compared with the conventional PID control and ACO-PID control simulation,it can be found in ACO-KF-PID compound control method not only can make the system stable rapidly,reduce the occurrence of insulation material waste caused by the phenomenon of vibration caused by the adjustment process in the early stage of production,but also can eliminate the interference of system,enhance the stability of the system;(4)In order to improve the automation level of the line diameter control system,IPC(Industrial Personal Computer,IPC)+PLC(Programmable Logic Controller,PLC)+ Fieldbus system is designed to control the diameter of the wire.We use the S7-300 series PLC as the controller,using STEP7 software programming,using MCGS 6.2 software for the upper computer interface design.Based on the ACO-KF-PID composite control method,the communication between MCGS and MATLAB is realized by OPC(Object Linking and Embeding for Process Control,OPC),which can realize the real-time management,data collection,intelligent control and other functions.