多变量非线性厚度-活套系统的鲁棒逆控制  

Robust inverse control for the multivariable nonlinear automatic-gauge-control and looper(AGC-LP) system

作　　者：曲蕾[1] 王京[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083

出　　处：《控制理论与应用》2009年第5期562-566,共5页Control Theory & Applications

摘　　要：针对典型的多变量、强耦合、不确定厚度-活套非线性系统,提出了一种基于逆系统理论的非线性解耦鲁棒控制策略.建立了厚度-活套非线性系统动态模型,应用该策略实现了厚度-活套系统的反馈线性化解耦,并针对伪线性系统的未建模动态和外界干扰推导了保证厚度系统鲁棒稳定性和鲁棒性能的约束条件,设计出抗干扰、鲁棒性强的反馈控制器.仿真效果表明鲁棒逆系统策略对厚度-活套多变量强耦合非线性系统控制的有效性.A new nonlinear decoupling robust control scheme based on the inverse theory is presented for a typical multivariable, strongly coupled, nonlinear and uncertain automatic gauge control and looper（AGC-LP） system. A nonlinear AGC-LP dynamic model is built, and the nonlinear robust control method is then applied to completely decouple the M1MO nonlinear AGC-LP system. For the unmodeled dynamics and the disturbance of the pseudo linear system, a constraint relation is also derived for insuring the robust stability and robust performance. Finally, a feedback controller with disturbance-rejection property and strong robustness is designed. The simulation results show the validity of the model and the robust inverse control strategy.

关 键 词：厚度-活套非线性模型 逆系统 解耦控制 鲁棒性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]