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Motion control technology is based on a digital signal processor (DSP), represented by high-performance high-speed microprocessors and complex programmable logic device CPLD development comes on, it is the numerical control device in a broad sense. CNC technology trends is the use of open CNC motion controller system. This paper presents a new motion control card, use TI s TMS320F2812 chip 32-bit, high-speed PCI bus for data transmission, and the use of the most advanced NURBS curve interpolation way to achieve multi-axis. In addition, the paper design of multi-axis motion control card as long as the output for each axis direction can be accurately controlled and the number of pulses, can achieve multi-axis control.