摘要
研究控制项含有时滞的线性系统的预测控制问题.利用被控对象的预测输出向量和系统的控制向量,设计了一种降维状态预测观测器,并将该状态观测器用于时滞控制系统的最优状态反馈控制中.利用该状态预测观测器可将闭环系统的时滞项移至系统闭环结构之外,从而最优控制规律完全可以按无时滞系统进行设计.由性能指标计算公式表明,该预测控制器关于二次型性能指标是次优的.
Predictive control problems for systems with control time-delay are studied. By using the predictive output vector of the plant and control vector of the system, a reduced-order predictive state observer is designed, and applied to optimal state feedback control for systems with control time-delay. Using this predictive state observer, the time-delay term of the closed-loop system can be transferred to the outside of the system's closed-loop structure. Therefore, one can design the optimal control law according to the design methods for systems without time-delay. Computing formula of performance index shows this predictive controller is suboptimal with respect to quadratic performance indexes.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2004年第2期295-298,共4页
Control Theory & Applications
基金
国家自然科学基金项目(60074001)
山东省自然科学基金项目(Y2000G02).
关键词
时滞系统
预测控制
状态观测器
最优控制
状态反馈
time-delay systems
predictive control
state observer
optimal control
state feedback
