说明：  利用现场可编程门列阵设计一款五轴步进电机运动控制卡，采用了NioslI软核CPU+FPGA的硬件设计方 案：利用NioslI软核CPU运行控制程序，利用FPGA来实现数字差补算法和细分驱动；采用了数字积分算法和正弦 波脉宽调制细分驱动技术。测试结果表明：该运动控制卡具有电路紧凑、性价比高而速度快、精度高和实时性强优 点。
(A kind of high—speed motion control card for controlling 5一axis stepping motor was implemented by FPGA，and a kind of design scheme based on NiosII+FPGA was proposed． The NioslI soft core CPU was used to run controlling program， and the algorithm of digital differential and subdivided drive were implemented by FPGA． The algorithm of digital differential ana— lyzer(DDA)and technology of SPWM were adopted in the card．Testing result shows that the card has the advantages of circuit compact，high ratio of price／performance， high controlling precision and strong real—time performance)