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针对某型机频域参数辨识过程使用传统的方法选择拟配节点出现的拟配不精确的问题,提出了自动选择拟配节点范围和随失配包线与功率谱密度综合选择拟配节点的方法。飞行试验数据处理结果表明,使用本文改进的辨识方法可提高等效系统辨识精度,同时提高试飞数据处理效率。
In the process of frequency domain parameter identification of a certain type of machine, the traditional method is adopted to select the problem of quasi-fitting inaccuracy of the proposed node. An automatic selection of the range of quasi-matching nodes and the selection of nodes with the combination of mismatched envelope and power spectral density method. Flight test data processing results show that using this improved identification method can improve the identification accuracy of equivalent system and improve the processing efficiency of flight data.