摘要
针对热连轧活套系统的强耦合特性,提出一类基于预测原理的交叉解耦控制策略.将一个两输入两输出的强耦合系统分解成两个相互影响的单输入单输出的子系统.基于预测控制原理,在一个周期内,顺序更新每个子系统的控制律,并保留未来的预测控制信息,补偿子系统之间的耦合影响,然后开始新的循环.基于H∞原理,将预测值与实际值的误差作为扰动处理,降低子系统之间的耦合影响,提高控制精度,简化控制器设计,减轻计算机的负担.仿真结果证实了该方法具有较好的解耦效果和控制性能.
A decoupling control strategy is proposed for looper strong coupling control system of hot strip rolling.Based on predictive control theory,a double-inputs-double-outputs control system could be divided into two SISO subsystems,the controller of each subsystem be updated sequentially in a sampling time,and the future control information be kept and used to compensate the coupling effect among subsystems.Control theory is used to reject error disturbance between the future control information and actual value.Above decoupling control strategy could simplify the design of controller,reduce computation load and improve control precision.Finally,simulation results show that the proposed control strategy has better decoupling and control performance.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2012年第9期971-975,共5页
Transactions of Beijing Institute of Technology
基金
山东省自然科学基金资助项目(ZR2010FM028)
中央高校基本科研业务费专项资金资助项目(12CX04075A)
关键词
热连轧
预测控制
解耦控制
活套控制
hot strip rolling
predictive control
decoupling control
looper control
