【摘要】 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更多还原

【Abstract】 n the basis of introduction of the principal theory of wavelet transform,the method of characteristics extraction using the cardinal B spline biorthogonal wavelet transform modulus maxima is discussed in detail.The experiments testify that this method can extract the waveform chacteristics of the welding current effectively.更多还原