汽温系统的一种稳定预测控制方法设计

预测控制的最主要特征是滚动优化,该文深入分析了预测控制原有的滚动优化策略,提出了一种简化的预测控制方案,给出了算法步骤,并基于李亚谱诺夫稳定性理论对简化的控制算法进行了稳定性分析与设计.通过仿真研究在对单变量系统进行控制效果分析的基础上将其应用于200MW机组带汽-汽换热器的多变量汽温系统,结果表明,该方法具有算法简单,运算量小,运算速度快,控制量变化柔和,鲁棒性好的特点,尤其适用于复杂系统的控制,具有良好的应用前景,是对预测控制算法简化的一种有益的尝试.

Stable Layout of Predictive Control Method in Temperature Control System

Rolling optimization is the most important quality of Predictive Control.The paper analyzes the rolling optimization theory of Predictive Control closely.A new simplified control scheme is proposed.Steps of the algorithm are given and stability analysis and layout based on Lyapunov stability theory are conducted.After the analysis of control effect is done it is used in a multi-variable temperature control system with steam-steam heat exchange of 200 MW unit power.Simulation study shows that the scheme has the features of simple method,little calculation amount,high speed,subdued change of manipulated variable and good robustness.It is applicable in complicated system and has good application prospect. It is a good try in simplification of Predictive Control algorithm.