| Full-automatic computerized knitting machine (FACKM) is a kind of high technology equipment in knitting industry. It integrates mechanical design, computer numerical control, knitting process, image processing and software engineering. FACKM brings profound reform in manufacture way, product construction and industrial structural of knit goods. With rapid development of computer technology, advanced manufacturing together with fashionable outer-wearing and seriating of knitting dressing, the computerized flat knitting machine is promoted to develop toward full automation and high intelligence. The present dissertation focuses on some key techniques about how to realize a system of FACKM. It includes the main contents as following.1. Weave components representing for basic stitches of weft-knitted fabric is studied. An effective and scientific classification of weaving component is studied and the corresponding weaving component libraries are provided. As a result, users can combine weaving movements freely by selecting components from the library to achieve maximum flexibility.2. Drawing engine technique is studied. A layered design idea of pattern is formed. Weave signs, transfer signs, quantity of transfer needle and jacquard pattern signs are drawn and treated respectively. The system has functions of simplifying and flexible patterns of input and editing, and display. It overcomes disadvantage that all signs are defined as a whole. Consequently, it has maximum convenience.3. Aiming at flexible multi-layer design idea in the system, drawing engine technique is studied and assorted framework model of new drawing engine is built to manage drawing-layer harmoniously. Knitted loop model based on Perice is studied and improved in order to resolve conflict between three-dimension display of knitted loop and larger Capacity of memory. Geometrical model of knitted loop is built.4. The realization methods including software platform of pattern preparation system based on layered system and software platform of knitted fabric simulation system based on geometrical loop model are studied. In the pattern preparation system, patterns can be designed and control codes can be produced automatically system. In the latter system, loop conformation can be displayed direct loop width and yarn diameter. And in addition, diverse kinds of pattern will be composed of loop and tuck and float thread.5. The arithmetic of typical drawing tools based on Windows GDI is studied and edge testing arithmetic is improved. In order to solve efficient in jacquard pattern styles, a method that reeled pattern of each jacquard pattern is defined by user. Moreover, color types and the sequence of jacquard pattern are set by option lines. In this way, we can obtain millions of jacquard pattern. Researching function of subroutine to solve the difficult problem that cite- and- return weave is correspond to the calculation.6. In the whole control of flat knitting machine, a classification control method is adopted owing to a great lot of control components and complicated control objects. The control system is made up of monitor level, coordinate control level and bottom-level. ARM is the center of monitor-level. DSP and CPLD is responsible for the other two levels. The hardware and software of each level are designed. In this way, the complex structure of control is significantly simplified. Furthermore, effective and coordinated control is completed by ARM and DSP and CPLD used for their advantages respectively.
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