Design Of Tension Adjustment And Control System For Water Jet Loo

In the textile quality control and adjustment system,the loom tension control system determines whether the yarn tension is appropriate and uniform,and during the weaving process,the size and uniformity of the yarn tension directly determine the efficiency of the loom and the quality of weaving.Therefore,an excellent tension regulation control system is essential to maintain stable yarn tension and create high-quality textiles.This paper focuses on tension control and designs a tension control system for water-jet loom based on PLC.On the basis of discussing the research status and development trend of water-jet loom at home and abroad and the five major movements of loom,the working principle of the warp winding part of the loom is analyzed,and the main factors and quantitative relationships affecting the warp tension control in the weaving process are discussed,which lays a foundation for the mathematical modeling later.The tension control system scheme was analyzed and designed,and the tension rear beam part,warp shaft part,AC servo motor part,servo drive part and reducer part of the loom were mathematically modeled according to the designed control system scheme,and the mathematical model of each part was integrated into a total mathematical model,which was used as a model for analyzing the tension of the system,and simulated in the MATLAB environment,and at the same time,the performance analysis of the simulation experiment results was carried out.The analysis results show that it is difficult for the system to maintain the stability of its own tension,and it is necessary to control the tension through the corresponding PID algorithm,which paves the way for the design of fuzzy adaptive PID controller later.The control strategy scheme of conventional PID controller is discussed,and the Simulink model is constructed for the mathematical model transfer function of the large and small stages of the weaving shaft diameter by using the conventional PID control strategy,and the simulation curve simulation is carried out,and it is found that the conventional PID control strategy alone cannot achieve satisfactory control effect.Considering the time-varying nature of the system,a fuzzy adaptive PID control method combining conventional PID and fuzzy control is proposed,and the controller is designed.Finally,the designed fuzzy adaptive PID controller is used to control the system,and the model is simulated in the Simulink environment.The results show that the time-varying system controlled by fuzzy adaptive PID controller has better control effect than conventional PID,which lays a foundation for the design of tension control system.Finally,PLC is used as the core controller to establish a set of water-jet loom tension control system,the fuzzy adaptive PID control strategy is applied to the system,and the hardware and software design and debugging of the system are carried out.The hardware part of the system includes detection unit,signal processing unit,drive unit and communication unit;The software part mainly designs tension signal acquisition and processing,communication and fuzzy adaptive PID algorithm.Based on the PLC,the user window interface is designed by the configuration software,and some operating parameters are debugged.The debugging shows that the system has smooth control and can achieve the preset goal of tension control,which has high application value.