感应炉温度模糊PID控制系统的研究

感应炉要求有较精确的温度控制,但由于感应炉有非线性、时变和纯滞后等复杂特性,很难建立其精确的数学模型,经典和现代控制方法不能达到好的控制效果。采用模糊自整定PID(比例-积分-微分)方法研究感应炉温度问题,实现PID参数在线自整定并在感应淬火炉上进行了仿真分析。结果表明,模糊自整定PID控制效果好,并且有较好的适应性和鲁棒性。

Research on fuzzy PID controller for temperature of induction furnace

The Induction furnace requires highly control precision,but it is difficult to establish the mathematic model because it possesses such features as non-linear,time-variable,pure lag,and etc.Both the classical control and the modern control can not get good control effect.The self-tuning fuzzy PID controller was adopted in this paper,which could realize the self-tuning of PID parameters.The system in the induction furnace was simulated.The simulation results show that,compared to the conventional PID controller,the self-tuning fuzzy PID controller has better control effect and performs better in adaptability and robustness.