›› 2019, Vol. 39 ›› Issue (3): 81-.doi: 10.16708/j.cnki.1000-758X.2019.0022
YANG Yi-Qi, LIU Hao-Yang, YUE Long-Hua, WANG Tian-Hang
Aiming at the problems of nonlinear pressure control, large timelag and variable parameters, a closed loop pressure control system is designed based on selfadaption fuzzy PID technology. By online adjusting of the proportional coefficient Kp,the integral coefficient Ki and the differential coefficient Kd of the controller, high precision control of the pressure is realized. Based on the test data, a secondorder lag inertia model is established by curve fitting and simulation. The simulation verifies the validity of the model. The conclusion shows that this control effect is better than the conventional PID control, and can effectively improve the dynamic performance and steadystate accuracy of the system. It can be widely used in the automatic control system of the launch site where PLC control is a core method.
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YANG Yi-Qi, LIU Hao-Yang, YUE Long-Hua, WANG Tian-Hang. Application of selfadaptive fuzzy PID technology in launch site gas supply system[J]. , 2019, 39(3): 81-.
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