Simulation And Design Of Compound Machine Control System Based On Multi Motor Synchronization

As the most important production equipment in the field of coil composite,Compound Machine is widely used in the compound production of cloth,leather,film and other materials.With the rapid development of Chinese industry,the performance requirements of the market to the Compound Machine are also increasing.The traditional Compound Machine has not been able to meet the growing market demand because of its low automation,low control precision and low production efficiency.In view of the winding machine of the Compound Machine,many scholars have studied the tension control link in the rolling material production,and put forward various tension control schemes to improve the quality of the production.Tension control has the characteristics of nonlinear,time-varying and strong coupling.In order to achieve a better tension control effect,the tension control design of the winding production equipment needs to control the tension from the root of the tension in real time.This paper takes the clothing cloth Compound Machine as the research object.From the multi motor synchronous control of the Compound Machine,in order to improve the synchronous performance of the multi motor of the Compound Machine,the design of the control system is improved on the basis of the traditional Compound Machine.The aim is to improve the control effect of the automation of the Compound Machine and improve the control effect of its tension.The quality of its products.This paper introduces the composition and basic process flow of the compound machine,and analyzes the shortcomings of the traditional compound machine combined with the actual production.On the basis of fully considering the factors of performance and production cost and so on,according to the principle of reliability,economy and practicality,the control scheme of the Compound Machine with touch screen,PLC,frequency converter and asynchronous motor as the core is put forward.And on this basis,the following work has been done.First,the tension model of the Compound Machine system is established.Through the analysis of the dynamic model of the winding and unwinding of the Compound Machine,the strong coupling relationship between the tension of the winding and the system line speed and the volume of the material is obtained,and the special tension converter is proposed instead of the traditional floating roll tension controller.Through real-time calculation of coil diameter,the output torque of the retractable motor can be adjusted to maintain the linear speed of the system,so as to achieve the purpose of controlling tension.Secondly,the multi motor control mode of the original Compound Machine is improved.The speed of the motor is detected by the encoder and the frequency converter PG card.The parallel control mode is replaced by the deviation coupling multi motor control mode while the closed-loop control is formed,so as to improve the synchronous control performance of the multi motor of the Compound Machine.And use the toolbox of MATLAB/simulink,the multi motor control model is built and simulated,and the advantages and disadvantages of various multi motor control methods are compared and analyzed.It is proved that the speed synchronization and anti-interference ability of multi motor using the deviation coupling control is better than that of the parallel control and the master slave control.Finally,the main circuit and PLC control circuit of the control system of the Compound Machine are designed according to the process control requirements,and the human-computer interaction interface based on the touch screen is designed to set up and monitor the various operating parameters in the actual production of the Compound Machine.