This paper proposes an OGY method based chaotic prediction.

提出一种基于混沌预测的OGY方法。

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But the periodic orbit of the system must be found, before OGY method can work.

利用OGY方法必须预先知道系统要被稳定的周期轨道，并且这种方法控制的实时性较差。

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The chaotic control of the model by OGY method was discussed and a new way was provided to improve the precision of the six roll UC mill.

利用OGY控制方法，对该迭代模型进行了混沌控制，为从根本上提高六辊uc轧机轧的轧制精度提供了一种新的控制思想。

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