史密斯模糊自整定PID控制器在温度控制系统中的应用研究

分析了PID控制器和模糊PID控制器的优缺点,将史密斯纯滞后补偿和模糊控制PID的优点结合起来,设计了史密斯模糊自整定PID控制器。计算机仿真和现场运行结果表明,史密斯模糊自整定PID控制器与模糊自适应PID控制器和常规PID控制器相比较,提高了烘干炉温度控制系统的自适应能力和鲁棒性,改善了系统的动态性能和静态性能,能使非线性、大滞后等特殊的系统达到良好的控制效果。

Application Research of Smith Fuzzy PID Control Technique in Temperature Control System

The advantages and disadvantages of the PID controller and fuzzy PID controller are analyzed.This method can take the advantages of them and avoid the disadvantages.The Smith fuzzy self-tuning PID controller was designed.The computer simulation result as well as the spot test show that the Smith and fuzzy self-tuning PID controller,compared with fuzzy self-tuning PID controller and the traditional PID controller,can increase the self-tuning ability and the robustness of the temperature control system.It can improve both the dynamic and static property of the system,hence a better effect for special systems like nonlinear or time-lag ones.