工业温度控制系统具有非线性、时变性和滞后性等特性,严重影响温度控制的快速性和准确性,为了解决常规PID参数调节在温度控制中适应性差,调节效果不理想的问题,这里采用了模糊PID参数自整定控制方法,用模糊控制规则对PID参数进行修改,利用Matlab的Simulink仿真工具箱做了常规PID与模糊PID的仿真对比试验.仿真结果表明,模糊PID参数自整定控制效果在超调量和调节时间上都小于常规PID,提高系统快速性和准确性,改善了温度系统动态性能.%The industry temperature control system has features of nonlinear, time-varying and hysteretic, which seriously affected the speed and accuracy of the temperature control. In order to solve the less adaptable regulation of conventional PID parameter adjustment in the temperature control, a parameter self-tuning control method of fuzzy PID is adopted. The method uses fuzzy control rules to modify the PID parameters and utilizes the Simulink simulation toolbox of Matlab to make a contrast test between the conventional PID and fuzzy PID. Simulation results show that the control effect of parameter selftuning of fuzzy PID is better than conventional PID in the overshoot and settling time, and the system speed, accuracy and dynamic performance are improved.
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