Development Of Control System Of High-speed Silk Stocking Machine

As people's living standard continues to rise,the traditional single sock products cannot meet the market demand.As a kind of sock,silk stockings are popular with women for their elasticity,comfort and beauty.For the past few years,domestic enterprises have developed the high stitch,high number and high speed of silk stocking machine,breaking the monopoly of the foreign silk stocking machine manufacturers in the domestic market.However,enterprises in domestic with the development of the silk stocking machine are a minority.Based on the above background,the control system of a high-speed silk stocking machine is developed by studying the basic composition,process and the control requirement of the silk stocking machine.Firstly,the paper analyses the basic composition of the silk stocking machine,process and function of the actuator,and calculates the swing time requirements of the needle head of the selecting needle machine in theory.Based on the research status and development trend of the silk stocking machine,the control requirements of the control system of the silk stocking machine are summarized.On the basis,a hierarchical scheme of control system based on ARM microcontroller is proposed,which is based on the design idea of modularization and unitization.The scheme is hierarchically designed according to the function and purpose,and is modularly and unitedly designed by the idea of being convenient for development and maintenanceThen,the paper,around the control level,putting the main chip of the real-time control unit as the center,designs the hardware and the software of the control level of the control system.On the design idea of modularization,the emphasis is on designing the layout mode of chip and the distribution mode of CAN Bus,studying the requirements of the main program and formulating the CAN Bus protocol.For the interaction level,the paper presents the software architecture of the human-computer interaction system and the form of human-computer interaction interface.For the implementation level,according to the control requirements of the actuator,the control schemes of the driver board of the valve,the selecting needle machine and the stepper motor are put forward.Based on the simulation analysis and experimental research,the control schemes of the three driver boards are optimized.Finally,the paper makes the functional,real-time and reliable test of the control system and analyzes by building the test platform of the control system.The results show that the control system meets the control requirements of the high-speed silk stocking machine,and the control system runs smoothly and reliably.