摘要
针对发射场加注供气系统压力控制非线性、大时滞、变参数问题,设计了一种基于自适应模糊PID技术的闭环压力控制系统.该系统通过对控制器的比例系数Kp、积分系数Ki和微分系数Kd的在线调整,实现了压力的高精度控制.依据试验现场数据采取曲线拟合方法建立系统二阶滞后惯性模型并进行了仿真.通过仿真验证了模型的有效性,效果优于常规PID控制,有效地改善了系统的动态性能和稳态精度,在以PLC控制为核心的发射场自动化控制系统中可推广使用.
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 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 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.
作者
杨宜禥
刘浩洋
岳龙华
王天航
YANG Yi-Qi;LIU Hao-Yang;YUE Long-Hua;WANG Tian-Hang(School of Air and Missile Defense,Air Force Engineering University,Xi’an 710051,China;School of Information and Navigation,Air Force Engineering University,Xi’an 710000,China;Unit 93658 of PLA,Beijing 100144,China;Unit 63723 of PLA,Xinzhou 036304,China)
出处
《中国空间科学技术》
EI
CSCD
北大核心
2019年第3期81-87,共7页
Chinese Space Science and Technology
关键词
加注供气
模糊控制
PID
数据拟合
系统建模
仿真
injection gas supply
fuzzy control
PID
data fitting
system modeling
simulation
