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中文摘要：
PloyMAX方法是一种非迭代频域参数估计算法，也可称为多参照最小二乘复频域算法，可以很稳定地产生系统的极点和参与因子，从而更容易理解稳态图。应用PloyMAX方法对某型号振动筛进行了实验模态参数估计，所得结果验证了振动筛优化设计中所建立的有限元模型的准确性，显示了该方法在参数估计方面的优势。
英文摘要：
The PolyMAX is a non- iterative frequency- domain parameter estimation method, also called a poly- reference least - squares complex frequency - domain method. One of the specific advantages of the technique lies in the very stable identification of the system poles and participation factors as a function of the specified system order, leading to easy - to - interpret stabilization diagrams. The PloyMAX method is employed to estimate the modal experiment parameter of certain screener. The result is revealed that its infinite element model which is employed in optimizing design has high precise.
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