采用FPGA芯片设计了纸材上料机直流调速控制系统，提出了预设运行速度曲线实现惯性分离的控制策略，设计了模糊PID双闭环算法，缩短速度上升的时间并提高稳态精度，RS232接口使系统可以多机协同工作，并且通过判断算法解决了卡纸、重张问题。在Quartus II 6.0中设计了包括速度电流检测、模糊PID算法、调速给定和RS232的控制核心。试验表明，系统动作准确、反应快速、性能稳定。

The DC motor speed control system of paper feeding machine was designed based on FPGA. A control strategy of inertia separation, which machine runs according to a predetermined speed curve, was put forward. The double closed-loop speed regulation algorithm of fuzzy PID was designed to reduce rising time and steady state error. The paper jam and overlapping problems was settled well with a judgment method. A RS232 interface was designed to form a multi-machine cooperation system. The control core, including speed and current detection, fuzzy-PID algorithm, speed setting and RS232, was designed by Quartus II 6.0. Tests results showed that the system has accurate operation, fast response and steady performance.