Based on the sufficient analysis of ppf control rule , the research into the algorithm combination between fuzzy control and ppf control is made to develop the intellectual ppf control system and design automatic tracking system to the edge of strip steel by the step motor , the signal collecting circuit with the capacitance sensor , servo magnifying circuit , and interface circuit are designed also 本文在充分分析ppf的控制规律的基础上,研究了模糊控制与ppf控制算法结合,组成智能ppf控制系统,设计了步进电动机带钢边缘自动跟踪系统,电容传感器信号采集电路,伺服放大电路及接口电路。