可实现单边区间控制的模型预测控制算法  

A zone-control algorithm with unequal limits in the model predictive control

作　　者：王锋[1] 张启平[1] 周涵[1] 李风敏[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《计算机与应用化学》2005年第5期349-354,共6页Computers and Applied Chemistry

摘　　要：对于具有多变量强耦合特点的工业过程对象,控制系统的稳定性是非常重要的。这要求减少控制作用和降低控制强度。但对于控制输出偏离控制目标,尤其控制输出偏向非常不希望的方向时,需要较强的控制作用使输出快速返回目标值, 这样就存在怎样协调控制的快速性和稳定性之间的矛盾。本文针对这一问题,提出了以MPC(model predictive control)理论为基础的单边区间控制算法。通过权重区分输出偏离目标值的方向,对不同的偏离方向采取不同的控制强度,在保证快速控制的前提下最大限度满足稳定控制的要求。本文还对算法的求解进行了讨论,并通过实例仿真说明了新算法能够实现单边区间控制。As to the plant with multi-variable and coupling performance, control stability is paramount. Up to this point, it is necessary to diminish and weaken the regulating. However, it should take hard regulating to quickly withdraw the output into the object, as the output goes away the object, especially run to the dangerous direction. Therefore, how to solve the contradiction between speediness and stability is presented. To solve the problem, the paper will propose zone-control algorithm with unequal limits on the base of the theory of MPC, which take various control to different devious from the object through distinguishing the devious directions by different weights. In this way, it realizes stability as possible as under the prediction of quickly returning the object. In addition, the solution to the algorithm paper is discussed and finally it is proved that the new algorithm is realizable by the simulation.

关 键 词：模型预测控制 区间控制算法 单边区间控制 权重 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]