Research And Development Of Control System For Computerized Flat Knitting Machine Based On PC Control

Computerized flat knitting machine is an automated and high degree of intelligence mechanical and electrical products, which combines mechanical design, knitting technology and computer software control as a whole. Computerized flat knitting machine controller is the most critical part of the computerized flat knitting machine, which of the function is not only to control computer knitting machine and data shows but also directly determines the quality level of computerized flat knitting machine. However, the high-end computerized flat knitting machine is mainly dependent on imports, which of the reason is that domestic computerized flat knitting machine could not break through some of the core technology, and the current domestic computerized flat knitting machine also exist disadvantages, such as unstability and shortcomings of complex operation. As a result, this subject focuses on the design of the computerized flat knitting machine control software, and the system architecture based on a PC control.Based on the depth understanding of the operation on computerized flat knitting machine and structural principle, this research work was carried out. At first, this subject introduced the structure and working principle of the computerized flat knitting machine, and discussed the needle selection principle and knitting principle of the computerized flat knitting machine. Based on all of these, the thesis analyzed the key of the control of the computerized flat knitting machine. By analyzed the workflow of computerized flat knitting machine, it determined the structure of the overall framework of the control system.The paper not just focuses on the research of the file structure of the computerized flat knitting machine, but also takes the Windows as a development platform, using Visual C++ to develop control software, handling and processing data for the operation of the computer knitting machine in a PC. In order to realize the real-time and accurate control, this software has a real-time data acquisition and data processing though CAN-bus. Compared with the original control software, this software has a simpler interface and more convenient operation. For the key modules of the software design, it given a specific algorithm or flow chart, and optimized the algorithm for the program of some part of the interface.Finally through a USB-CAN bus adapter, the thesis realize the interconnection of the PC’s USB interface and the CAN bus. In making a control protocol of the computerized flat knitting machine head and CAN bus, it realized the program of the communication module, according to the development of the USB-CAN bus adapter.After the tests of many kinds of pattern, it shows that the system that has a better real-time can better meet the control requirements of the computer knitting machine, the system runs stably. The system made the control interface become very intuitive, and it simplifies the operation of the computer knitting machine control software. Moreover, the system has a high practical value and application prospect.