This paper has suggested an iteration method which excluded the effect of the sampling interval on frequencies identification.

本文提出了一种迭代法，消除了采样间隔对频率辨识的影响。

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The identification accuracy is related to the order of the fitting model, sample interval and sample number, and also affected by signal noise, which shows the method should be improved.

辨识精度与算法中拟合模型阶数、采样时间间隔和采样总数有关，并受信号中噪声的影响，需加以改进。

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The nonlinear parameter identification of fuel cell polarization curve was converted into two sub-problems of linear least square identification based on interval segmentation technique.

基于区间分段思想，将极化曲线非线性参数辨识转化为两个线性最小二乘辨识子问题。

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