基于隐式广义预测的LNG出口压力控制仿真研究

Simulation research on LNG control of outlet pressure based on generalized predictive implicit

文中以隐式广义预测控制[1]的原理为基础,建立了以受控自回归积分滑动平均模型(即CARIMA)为基础的LNG气化储备站出口压力控制的隐式广义预测控制。利用MATLAB对此控制系统进行了仿真,同时介绍了常规PID控制,也对常规PID控制系统进行了仿真,由仿真结果可以看出隐式广义预测控制比PID控制具有响应时间短,控制精度高等优点并能取得良好的可行性、鲁棒性、优越性。

This paper is based on the principle of implicit generalized predictive control, to establish a controlled autoregressive integrated moving average model（CARIMA） implicit generalized predictive control station exit pressure gasification reserves. Using MATLAB to simulate the control system, and introduces conventional PID control, also has carried on the simulation to the conventional PID control system, the simulation results show that the implicit generalized predictive control has the advantages of short response time than the PID control, high control precision and good robustness, feasibility,superiority.