【摘要】 提出了一种用于故障信号奇异性检测的小波基选择方法—按照小波规则性系数选择小波基。这一方法是基于小波变换后的小波系数表示小波函数和信号之间的相似程度,同时信号的规则性系数又和小波变换后的小波系数模值间存在着一定关系。仿真结果表明,这一方法的有效性和可行性。更多还原

【Abstract】 ?A method of choosing a wavelet for the detection of singularities of a fault signal is presented. The method is to choose a wavelet by the regularities of the wavelet and the signal. The method is based on the fact that the coefficient of the wavelet transform signifies the resemblance between the wavelet and the signal, at the same time, the regularity of the signal is relative to the wavelet coefficient. A simulation is presented to illustrate the validity and feasibility of the method.更多还原