电阻炉是一个特性参数随炉温变化而变化的被控对象,炉温控制具有大惯性、大滞后、时变性的特点。传统的PID难以达到较高要求,故文章应用一种参数自适应模糊PID控制方法,根据系统误差E和误差变化率EC对参数的要求在线整定PID参数KP、KI、KD。在用MATLAB仿真过程中,该控制器比常规PID具有良好的动、静态特性。 Resistance furnace is a characteristic parameter with the temperature changes and changes in the controlled object, furnace temperature control with large inertia, large lag, when the nature of change. The traditional PID is difficult to meet the higher requirements, so the article applies a parameter adaptive fuzzy PID control method. The PID parameters KP, KI and KD are set online according to the requirements of the system error E and error rate of change EC. In the simulation process with MATLAB, the controller has good dynamic and static characteristics than the conventional PID.