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阐述了二代小波的原理和实现方法;研究了基于Lagrange插值细分法的预测算子和更新算子的求解方法,并利用预测算子和更新算子构造出了尺度函数和小波函数;最后,将二代小波及Lagrange插值细分法应用于矿用通风机的故障诊断中,对风机振动信号进行降噪分析,并成功地提取了风机的故障特征信息,为煤矿设备故障诊断提供了一种有效的方法。
The principle and implementation method of second generation wavelet are expounded. The method of solving the predictive operator and updating operator based on Lagrange interpolation subdivision is studied, and the scale function and wavelet function are constructed by using the predictive operator and the updated operator. Finally , The second generation wavelet and Lagrange interpolation subdivision method is applied to the fault diagnosis of mining ventilator, the noise reduction analysis of the turbine vibration signal is carried out, and the fault characteristic information of the turbine is successfully extracted, thus providing a Effective method.