热连轧液压厚度控制系统的H_∞鲁棒预测控制  

Robust H_∞ Predictive Control for HAGC in Hot Strip Rolling

作　　者：张晓东[1] 姚小兰[1] 伍清河[1] 

机构地区：[1]北京理工大学自动化学院,北京100081

出　　处：《控制工程》2011年第2期194-197,共4页Control Engineering of China

基　　金：国家自然基金资助项目(69874040)

摘　　要：对热连轧动态设定型自动厚度控制控制系统模型进行理论分析,由于厚度控制系统复杂,工作环境恶劣,精确的数学模型难以建立。针对工程实际,提出一类基于的鲁棒预测控制算法,在系统存在参数摄动和扰动的情况下仍能满足期望的性能指标,实现了多目优化标控制,提高控制系统的性能,并且使得控制输入满足硬约束条件,防止控制输入过大对轧机系统造成损害。由于所得结果以非线性矩阵不等式形式给出,采用锥补线性化思想将非线性矩阵线性化,求解线性矩阵不等式,根据其可行解求解控制率。根据实际参数和经验数据进行仿真实验,结果表明该方法的有效性和较好的控制性能。The model of hydraulic dynamic set automatic gauge control（AGC） system is analyzed. Based on the engineering practice, an H∞ robust model predictive control algorithm is presented, to guarantee the control performance under structure uncertainty and disturbance. The constraints on control input are satisfied to prevent large input doing harm to hot strip mill. The cone complementary linearlzation idea is then employed to convert the controller design into a nonlinear programming problem with linear matrix inequality （LMI） constraints. The feasible solutions are obtained through solving the LMI and the controller is constructed using the feasible solutions. The simulation results on the actual parameters and the empirical data show the effectiveness of the proposed methods.

关 键 词：液压厚度控制 预测控制 控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]