具有输入饱和的轧机液压伺服系统鲁棒动态输出反馈控制  

Robust dynamic output-feedback control of hydraulic servo system with input saturation for rolling mill

作　　者：李建雄[1] 方一鸣[1,2] 石胜利[1] 

机构地区：[1]燕山大学工业计算机控制工程河北省重点实验室,河北秦皇岛066004 [2]国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004

出　　处：《控制与决策》2013年第2期211-216,共6页Control and Decision

基　　金：国家自然科学基金项目(61074099)

摘　　要：针对具有状态不可测、参数不确定和输入饱和的轧机液压伺服位置系统,提出一种基于anti-windup的抗饱和鲁棒动态输出反馈控制算法.首先,应用Finsler引理,将闭环系统稳定的充分条件转化为LMI条件,并解得控制器参数矩阵;然后,综合考虑系统的干扰抑制能力和稳定域大小,求解优化问题,得到anti-windup增益矩阵.可以证明,所设计的控制器能够保证闭环系统一致有界稳定,并具有鲁棒∞性能.将所提出的算法应用于某650 mm可逆轧机液压伺服位置系统中进行仿真,其结果验证了所提出算法的有效性.An anti-windup-based robust dynamic output feedback control algorithm is presented for hydraulic servo position system with unmeasurable states,uncertain parameters and input saturation in a rolling mill.Firstly,a sufficient condition of stability can be transformed into a linear matrix inequality（LMI） condition by using Finsler’s lemma,and the controller parameter matrices are obtained by solving LMIs;Secondly,by compromising the disturbance attenuation and stability region,the anti-windup matrix is obtained by solving a convex optimization problem.It can be proved that the proposed method can guarantee the closed-loop system is uniformly bounded stable and possesses robust ∞ performance.Finally,a simulation is carried out on the hydraulic servo position system of 650 mm reversing cold-strip rolling mill,the simulation results show the validity of the proposed algorithm.

关 键 词：液压伺服位置系统 动态输出反馈 输入饱和 鲁棒H∞性能 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]