Research On Typical Problems Of Winding And Flying Shears

Winding and flying shear control has always been the focus of research in the metallurgical,textile,and paper industries.With the advancement of science and technology,research around winding and flying shears has been carried out and deepened.Studies have shown that a good winding control system and a flying shear system play a decisive role in the high-precision manufacturing industry,which directly determines the pros and cons of the product.Due to the lack of equipment research and development capabilities in related industries in China,long-term dependence on imports has resulted in low automation of domestic equipment and poor control effects,resulting in low market share.To this end,it is particularly important to improve the control accuracy of domestic equipment.The research work of this paper is carried out on the experimental platform with Siemens motion controller as the core.The core control part of the platform includes Siemens S120 high-precision servo driver and S7-300 315 T CPU.This paper designs a new set of winding control and flying shear control solutions.And the specific research contents are as follows:(1)Taking the Siemens motion control experimental platform as the research object,the two typical problems of the winding process and the production process of the fixed-length flying shear control are analyzed.Research issues include constant tension rewinding,constant line speed rewinding,and fixed-length flying shears.Based on the physical structure of each link of the platform,a simplified physical model is established,and the controller structure of each link is combined,and the open-loop transfer function is obtained accurately by mathematical derivation.(2)Design of the regulator.Based on obtaining the open-loop transfer function of each link,taking the flying shear control as an example,the correction process of the open-loop transfer function is studied in detail.The PID controller is designed to perform parameter correction on the open-loop transfer function of the part,and the corrected PID controller is connected in series with the transfer function,and the simulation test is performed in Simulink.And promoted and applied in the other two control parts.(3)Fuzzy PID controller design.Based on the completion of the correction,the fuzzy inference rule table is established by combining the fuzzy control algorithm with the PID controller parameter adjustment rules,and the PID controller is combined with the fuzzy control algorithm to design the fuzzy PID controller.Taking the flying shear control as the simulation object,the simulation results are compared with the PID controller control results in Simulink to analyze the advantages and disadvantages.(4)The experimental platform project was established and the experimental results were presented.Based on a large number of related hardware and software learning and familiarity with the experimental platform,the project was built using STEP7 and TIA V14 software respectively,and the hardware configuration and network configuration of the system were separately configured.Use the TIA V14 to configure the HMI human-machine interface to realize the various processes of winding through the HMI and observe the control effects of each part in the HMI.On this basis,the PID control and fuzzy PID control algorithms are transplanted into the PLC,and the key parts of the fuzzy control theory are realized by the program function block programming in STEP7 software,including fuzzy,fuzzy reasoning and defuzzification.The complete program of the project is implemented in the LAD language programming.For the three parts of the paper,PID control and fuzzy PID control are respectively carried out,and multiple sets of experimental results are obtained.The control results are clearly presented in tabular form,and the control effects are analyzed to obtain experimental conclusions.The experimental results show that in the complex system control,the fuzzy PID controller is superior to the PID controller in terms of stability time and overshoot.The article provides a feasible solution to produce winders.