Research And Design Of Control Software System For Large Diameter Jacquard Circular Knitting Machine Based On Embedded Linux

Circular knitting machine is a main knitting equipment. This topic is on thebasis of an in-depth research of the structure and function of large diameterjacquard circular knitting machine,combined with circular knitting machinecontroller hardware platform, designed a large diameter jacquard circular knittingmachine control software system which is based on the embedded Linux operatingsystem.Hardware platform is divided into the upper machine and lower machine two parts.Upper machine part adopts the Forling company’s OK6410development board,witha64bits CPU S3C6410.Real-time control part adopts by other team members to developthe circular knitting machine control board. The main control board with STM32as the core,has been used several years by a hangzhou company under WinCE operatingsystem. This topic on this hardware platform transplant the Linux operating system,the data communication method and weave the related algorithm is studied underLinux system, and developed special drivers under Linux, such as a dual port RAMdriver. Using Qt4.8.5wrote a friendly man-machine interface, make the SD cardfor a key installation, convenient industrialization application. The functionsof control system has the following characteristics and advantages:(1) The system is practical. Circular knitting machine control system of allmain control function, can according to provide the weave pattern data files; WithUSB interface, designs a data file can be read directly from the USB stick, patternheight is not affected by storage space constraints. Support network communication,to facilitate online debugging.(2) The system stability. Overall system performance is stable, communicationbetween the upper and lower position machine is normal,48hours continuousoperation, no freezing of fault phenomena, blue screen.(3) The system security. Circular knitting machine control system adopts opensource software Linux3.0.1kernel, The software code written by me will be fullopen source in the future, highly information security for the customer. (4) The friendly operation interface. Adopt QT4.8.5written man-machineinterface under Linux3.0.1by8inch touch screen, overall concise and easy,according to the requirement of human factors engineering, detailed design, inline with workers operating habits.(5) Software installation convenience. This topic research and to make theSD card for a key installation, convenient circular knitting machine controlsoftware system of large quantities of industrialization application...