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本文在强稳定条件下，对关联大系统的跟踪问题进行了讨论，采用H∞方法设计了比例-积分控制器，可使故障大系统不仅分散强稳定，且能渐近跟踪常值参考输入信号．
In this paper, under the condition of strong and stable, the tracking problem of the associated large-scale system is discussed. The H∞ method is used to design the proportional-integral controller, which can make the large-scale faulty system not only decentralized and stable, but also can asymptotically track the constant reference input signal .