【摘要】 介绍了小波包变换的改进方法，将其应用于齿轮箱的故障诊断中，避免了混频现象，有效地提取 出齿轮箱故障特征，提高了故障诊断的准确率。更多还原

【Abstract】 Improving method of wavelet packet transforms is introduced. The application of the method to the fault diagnosis of gearbox avoids the phenomena of frequency mixing. It extracts the fault features of gearbox effectely and increases the accruacy of fault diagnosis.更多还原