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在介绍了子波变换基本理论的基础上，着重论述了应用基数样条双正交子波变换模极大值来提取信息特征的方法，并通过实验证明了该方法能够有效地提取焊接电流的波形特征
Based on the introduction of the basic theory of wavelet transform, the method of extracting information features by using the maximum value of the base-spline biorthogonal wavelet transform module is emphatically discussed. The experimental results show that this method can effectively extract the welding current Waveform features