预测控制偏差区间的一种工程化处理方法  

An Engineering-oriented Treatment in Constrained Predictive Control

作　　者：苗新刚[1] 胡品慧[1] 

机构地区：[1]中国石油大学机电学院,北京102249

出　　处：《控制与决策》2005年第7期834-836,840,共4页Control and Decision

基　　金：国家863计划CIMS领域过程自动化专题项目(2001AA413120);中国石油集团公司石油科技中青年创新基金项目(04E7027).

摘　　要：将被控变量的约束区间分为大小两种偏差区,并设计了调整偏差区大小的参数.当被控变量位于大偏差区时,连续调整控制率使控制作用加强,以便被控变量尽快回到小偏差区,从而加快控制系统的调节过程.控制作用从小偏差区过渡到大偏差时是连续变化的,避免了控制作用的跳变,消除了在大小偏差区交界处的震荡现象.仿真结果表明,在模型存在不确定性情况下,该工程化处理方法可使控制系统的动态性能明显改善.A strategy setting two different constrained areas including a small error area and a big error area for controlled variables is presented, and special parameters are designed to adjust error areas. If the controlled variable lies in the big error area, the controller is regulated and the control action is strengthened such that controlled variables return to the small error area as soon as possible. Control action changes continuously from small to big error area. Therefore the jump can be avoided, and the surge is eliminated, which makes the control performance better. Simulation results show that the implementation method can improve the system dynamic performance much better under uncertainty.

关 键 词：预测控制 状态反馈 约束控制 仿真 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]