渠道运行广义预测控制技术及其仿真

Generalized predictive control model and simulating for canals

由于渠道系统的非线性、大滞后以及其扰动的不可预见性 ,把在工业过程中常用的控制方式如PID控制 ,用在渠道自动控制中 ,效果不是很好 .采用基于参数模型的广义预测的控制算法 ,建立渠系自动运行数学模型 ,并在MATLAB平台进行了仿真 ,考察其对补偿渠系的大时延特性 。

Due to a long time lag, non-linearity and unpredict able perturbations involoved by hydrolic systems, control methods used in indust ry such as PI, PID are not suitable for automatic control of canals. To develop more effective controllers, different control methods have been developed and ar e still being developed. In our research, the generalized predictive control (GP C) algorithm is introduced. A dynamics model of canal based on GPC has been set and simulated in MATLAB. In our simulation study, the objective is to investigat e the effect on delay compensation and non-linearity regulation using GPC. We h ave tested the dynamics model and analyzed the simulation result. From the resul t, it is obvious that the controller based on GPC is rather suitable for automat ic control of canal.