Research On The Control System Of Chemical Fiber Filament Winding Machine

As an important process in filament production,winding machine winding and forming plays a very important role in filament production.With the increasing demand of large winding,high speed and high precision winding machines,the response speed and control accuracy of the control system are required to be higher.At present,domestic winding machine control system in hardware,the control accuracy at high speed is not high.In terms of control software,the control algorithm is complex and requires high computing power of the controller.In this paper,we design a winding machine control system to transfer the mathematical model of the optimal forming speed of yarn winding obtained by calculation into the controller,so that the controller can control the equipment work according to the established speed,which can reduce the computational complexity of the controller.The main research of this paper is as follows:First of all,the overall design of the control system is based on the working conditions of high speed and wide working frequency range of spindle and press roll motors,as well as the characteristics of high control accuracy and fast response speed.According to the requirement that the cross-motor needs to "return to zero" briefly in the process of raw head and reel change,the hardware design is carried out from the motor type and control mode,and the design is carried out for the timing actions of manual control,automatic winding and automatic reel change,etc.The general design diagram of the control system and the electrical schematic diagram are given.Then,the upper and lower computers of the control system are designed.The upper computer adopts C# as the upper computer development software to realize the monitoring of motor speed,drop wire time and alarm information of the multi-winding machine,and the setting of yarn process parameters including winding angle,diameter and slenderness,etc.The data volume of yarn process parameters is large,which is carried out with winding and downloaded into the controller in batches at regular intervals.Mitsubishi FX5 U PLC is used in the lower computer,and its data registers and variable address registers are customized for programming,including initial,main,subroutine and interrupt programs,to realize the initial reset of the winder,continuous deceleration control of the spindle motor,coordinated control of the transverse motor and the pressure roller motor,and timing control such as automatic reel change to complete the yarn winding process.Finally,the simulation circuit board is designed.According to the control requirements,the simulation circuit board is equipped with Modbus RTU signal acquisition port,pulse direction signal acquisition port and general IO signal acquisition port respectively,the master chip gets the acquisition information from the slave chip through IIC and sends it to Unity3 D simulation platform through serial port.In Unity3 D,the mechanical structure simulation and motion control of winding machine are realized,and the speed information and spatial trajectory information output function are designed.Connect PLC,circuit board and upper computer respectively,output key motion timing diagram and spatial trajectory diagram of winding machine,verify the correctness of control program,realize the regular increase of winding diameter during operation,and read the winding diameter in real time,calculate the value of real time line speed,verify the control system can complete constant line speed winding.