中文摘要：

为提高风力发电机组齿轮箱故障的诊断效率,提出基于小波包的频谱分析诊断方法.运用小波包对故障振动信号进行处理,求点蚀故障振动信号的频谱图,依据不同故障类型的振动频谱特性,判断故障类型及位置.Matlab仿真验证了该方法的有效性.

英文摘要：

To improve the fault diagnosis efficiency of the gear box of wind turbine generator system, the paper proposes a new spectral analysis method based on wavelet packet. The data of vibration signal is processed by means of the wavelet packet, and the spectral map of every Pitting corrosion fault signal is obtained. Combined with the feature of spectrum of every type fauh, the type and location of the vibration signal can be determined. Matlab simulation results show the eft~ctiveness of this method presented in the paper.