The knitting industry CAD/CAM system＇s development needs a solution of computer representation of the designed objects. One of them is a transformation of knitting rows and stitches form knitting pattern and its auto...The knitting industry CAD/CAM system＇s development needs a solution of computer representation of the designed objects. One of them is a transformation of knitting rows and stitches form knitting pattern and its automatic analysis is to control data from the knitting design data. A method of the pattern CAD system including the analyzing and the compiling of the pattern data was developed in this paper. By rasterizing the pattern map, the drafted pattern could be compiled into knitting row data and stitches. The storage format of knitting rows data and stitches data could be defined by analyzing the motion of computerized fiat knitting machine. By reassembling the control data, it could be analyzed into the execute data of the controller in computerized fiat knitting machine. This method mainly focused on the weak areas of multi-needle-bed technology and fully-fashioned knitting technology in inland and could be applied to most of control systems in the master-slave mode. The knitting row data and pattern row data in a ＂ ＊. ptn＂ format file were integrated. Giving a corresponding analytic calculation process of control data and realizing independent development of the upper machine and the lower machine, the final knitting control data not only have low computation and transmission cost but also have fast transfer speeds.展开更多
针对全成形电脑横机高速准确的花型数据传输要求,设计一种采用分级控制的全成形电脑横机控制系统。该主系统采用STM32F407与Cyclone IV EP4CE30F23共同控制,子系统以FPGA架构建立,主子系统间通过FPGA建立并行总线。详细阐述高速通讯电...针对全成形电脑横机高速准确的花型数据传输要求,设计一种采用分级控制的全成形电脑横机控制系统。该主系统采用STM32F407与Cyclone IV EP4CE30F23共同控制,子系统以FPGA架构建立,主子系统间通过FPGA建立并行总线。详细阐述高速通讯电路的设计思路,包括LVDS接口设计、FIFO缓存区设计、LVDS传输的PCB设计等。仿真结果表明,该控制系统可实现花型数据大量、高速、准确的传输,并满足高速编织要求,为研发全成形电脑横机控制系统奠定基础。展开更多
基金National Natureal Science Foundation of China(No.51305076)
文摘The knitting industry CAD/CAM system＇s development needs a solution of computer representation of the designed objects. One of them is a transformation of knitting rows and stitches form knitting pattern and its automatic analysis is to control data from the knitting design data. A method of the pattern CAD system including the analyzing and the compiling of the pattern data was developed in this paper. By rasterizing the pattern map, the drafted pattern could be compiled into knitting row data and stitches. The storage format of knitting rows data and stitches data could be defined by analyzing the motion of computerized fiat knitting machine. By reassembling the control data, it could be analyzed into the execute data of the controller in computerized fiat knitting machine. This method mainly focused on the weak areas of multi-needle-bed technology and fully-fashioned knitting technology in inland and could be applied to most of control systems in the master-slave mode. The knitting row data and pattern row data in a ＂ ＊. ptn＂ format file were integrated. Giving a corresponding analytic calculation process of control data and realizing independent development of the upper machine and the lower machine, the final knitting control data not only have low computation and transmission cost but also have fast transfer speeds.
文摘针对全成形电脑横机高速准确的花型数据传输要求,设计一种采用分级控制的全成形电脑横机控制系统。该主系统采用STM32F407与Cyclone IV EP4CE30F23共同控制,子系统以FPGA架构建立,主子系统间通过FPGA建立并行总线。详细阐述高速通讯电路的设计思路,包括LVDS接口设计、FIFO缓存区设计、LVDS传输的PCB设计等。仿真结果表明,该控制系统可实现花型数据大量、高速、准确的传输,并满足高速编织要求,为研发全成形电脑横机控制系统奠定基础。
