›› 2019, Vol. 39 ›› Issue (3): 81-.doi: 10.16708/j.cnki.1000-758X.2019.0022

Previous Articles    

Application of selfadaptive fuzzy PID technology in launch site gas supply system

 YANG  Yi-Qi, LIU  Hao-Yang, YUE  Long-Hua, WANG  Tian-Hang   

  1. 1.School of Air and Missile Defense, Air Force Engineering University,Xi’an 710051,China
    2.School of Information and Navigation,Air Force Engineering University,Xi’an 710000,China
    3.Unit 93658 of PLA,Beijing 100144,China
    4.Unit 63723 of PLA,Xinzhou 036304,China
  • Received:2018-11-15 Revised:2019-01-30 Online:2019-06-25 Published:2019-03-19

Abstract: Aiming at the problems of nonlinear pressure control, large timelag and variable parameters, a closed loop pressure control system is designed based on selfadaption fuzzy PID technology. By online adjusting of the proportional coefficient Kp,the integral coefficient Ki and the differential coefficient Kd of the controller, high precision control of the pressure is realized. Based on the test data, a secondorder 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 steadystate 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.

Key words: font-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">injection gas supplyfont-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">, fuzzy control, PID, data fitting, system modeling, simulation