引用本文:李昇平.MIMO离散时间系统混合l1/H2控制[J].控制理论与应用,2004,21(1):101~106.[点击复制]
LI Sheng-ping.Mixed l1/H2 control for MIMO discrete-time systems[J].Control Theory and Technology,2004,21(1):101~106.[点击复制]
MIMO离散时间系统混合l1/H2控制
Mixed l1/H2 control for MIMO discrete-time systems
摘要点击 1606  全文点击 1689  投稿时间:2001-05-08  修订日期:2002-11-15
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DOI编号  10.7641/j.issn.1000-8152.2004.1.021
  2004,21(1):101-106
中文关键词  MIMO系统  离散时间系统  混合l1/H2优化
英文关键词  MIMO system  discrete-time systems  mixed l1/H2 optimization
基金项目  国家自然科学基金项目(60374009); 广东省自然科学基金项目(990795).
作者单位
李昇平 汕头大学 机械电子工程系,广东 汕头 515063 
中文摘要
      研究了MIMO(多输入多输出)离散时间系统的混合l1/H2优化问题,该问题可描述为最优化一个传递函数矩阵的l1范数同时保证另一个传递函数矩阵的H2范数满足预定的指标.研究了最优目标函数值关于H2范数指标的连续性.证明了MIMO系统混合l1/H2控制问题最优解的存在性.由于基于标定-Q(scaled-Q)方法求解MIMO混合l1/H2问题,避免了进行零点插值运算的困难.通过求解有限维非线性规划问题可得到最优目标值的收敛的上下界.
英文摘要
      The mixed l1/H2 optimization problem for MIMO discrete-time systems was presented. This problem was formulated as minimizing the l1-norm of a closed-loop transfer matrix while maintaining the H2-norm of another closed-loop transfer matrix at prescribed index. The existence of the optimal solutions of mixed l1/H2 problem is proved. A solving method of the mixed l1/H2 problem was given based on the scaled-Q method. A numeric simulation example indicated the effectiveness of the method.