一种改进的动态矩阵控制算法在三级液位系统中的应用

摘要

A modified algorithm of Dynamic Matrix Control based on Genetic Algorithm is introduced,according to the requirements of the control effects of which DMC has implemented in the plant.The proper order is choosed to find the optimal control parameters by applying the Genetic Algorithm in the population of chromosome formed by control parameters in DMC, and finally calculates the real-time control variables applying the solutions of the optimal parameters that have gotten, in order to reduce the wasteful time by using the method of trial and error, and make the ideal effect of predictive control.An application of such method on the three-level system of MPCE-1000 is introduced and the simulation results show that such method improves real-time control abilities as well as robustness.%针对系统对动态矩阵控制(DMC)作用下控制效果的要求,研究了一种改进的结合遗传算法的DMC算法.选择适当寻优的顺序,应用遗传算法对DMC控制参数构成的染色体种群进行寻优,再通过得到的最优参数解集计算出实时控制量,缩短了采用试凑法寻优消耗的时间,从而达到满意的预测控制效果.将此改进方法应用于MPCE-1000仿真系统的三级液位系统,仿真结果表明该方法可以有效地增强实时控制,鲁棒性较好.