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提出了两种大系统分散Ｈ∞状态反馈控制的设计方法，首先描述了分散Ｈ∞状态反馈控制问题，然后提出了存在分散Ｈ∞状态反馈控制器的参数化定理和两种设计方法，即直接线性矩阵不等式（ＬＭＩ）方法和迭代ＬＭＩ（ＩＬＭＩ）方法，所获得的状态反馈阵具有块对角结构，且能满足闭环传递函数的Ｈ∞性能指标要求，给出的示例说明了两种方法的应用
Two design methods for decentralized H∞ state feedback control are proposed. First, the decentralized H∞ state feedback control problem is described. Then, the parametric theorem and two design methods for the decentralized H∞ state feedback controller are proposed, that is, the direct Linear matrix inequality (LMI) method and iterative LMI (ILMI) method, the state feedback matrix obtained has a block-diagonal structure and can meet the H∞ performance requirements of the closed-loop transfer function. The examples given illustrate the effectiveness of the two methods application