关键词: 过程系统, 过程控制, 模型预测控制, 区间控制, 经济模型预测控制, 时域分割

Abstract: A novel strategy has been proposed for integrating zone model predictive control(Zone MPC) and economic model predictive control(EMPC). Zone MPC is a kind of model predictive control that the control objective can be seen as a target set instead of a target point, which is used to account for the lack of degrees of freedom. In EMPC, the economic criterion is used as the stage cost, and the economic performance of the controlled plant can be improved. Hence, by combining zone MPC and EMPC, the system can be driven to a target set, while at the same time, the economic performance can be improved. In this work, prediction horizon slice strategy was presented to integrate zone MPC and EMPC into one strategy, in which there are two parameters:the dividing point and the weighting matrix. The proposed algorithm not only gives improved economic performance than the normal zone MPC, but also gives better stability than normal economic MPC. The simulation results demonstrated the effectiveness of the proposed approaches.

Key words: process system, process control, model predictive control, zone control, economic model predictive control, prediction horizon slicing