Abstract: To achieve clothing cutting at high control precision and high speed, the control system of cutting automatically by laser is developed. Taking advantages of Digital Signal Processor TMS320F2812’s rich hardware resources, the system improved laser cutting technology and tangent motion interpolation algorithm. Compared with congener products, it deleted the vibration making by mechanical cutter, meanwhile improving the work efficiency and quality for clothing cutting or pattern cutting. Based on laser cutting principle and general design ideas of auto-cutting system, the mechanical structure with hardware and software is developed for the cutting control system . It involved Secure Digital Card storage and FAT32 file management process to transferring files for trajectory control. The results indicated that this automatic laser-cutting system can cutting more exactly and efficiently.

Key words: digital signal processor , tangent motion interpolation algorithm , laser cutting , trajectory control