关键词: 预测模型, 模糊 PID, PLC

Abstract:

To improve and expand the application of the PLC controller and to solve the problem that it is difficult for the accurate model to determine the industrial control system with time delay,nonlinearity,and asymmetry,the idea of fuzzy control and the forecast model are combined with the traditional PID control,forming a forecast model of fuzzy-PID control method,and simulation is done in Matlab/Simulink.Test results show that the method is feasible,and has greatly reduced the system overshoot and adjustment time,the system has good steady-state performance,the adjustment process is stable,and the control precision is greatly improved.

Key words: forecasting model;fuzzy PID;PLC