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本文讨论了故障振动在小波分解下的信号特征,给出了小波包分解处理故障振动信号的原理和方法,论述了诊断信号的表达方式及其特点,给出并分析了一个变速箱多故障源的诊断实例.实践证明,作者给出的小波包分解与诊断方法具有理论和实际价值.
In this paper, the signal characteristics of fault vibration under wavelet decomposition are discussed. The principle and method of wavelet packet decomposition to deal with faulty vibration signals are given. The expression of diagnostic signals and their characteristics are discussed. A multi-fault source It has been proved by practice that the wavelet packet decomposition and diagnosis method given by the author has theoretical and practical value.