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行星齿轮箱齿轮局部故障振动频谱特征

, PP. 119-127

Keywords: 风力机,行星齿轮箱,局部故障,振动信号模型,特征频率,频谱

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Abstract:

齿轮局部损伤在齿轮箱故障中占有很大比例,其频谱特征与分布式故障具有明显区别。研究太阳轮、行星轮和齿圈局部故障振动信号的频谱结构对于行星齿轮箱故障诊断具有重要意义。考虑齿轮局部故障对啮合振动的调幅调频率作用、以及振动传递路径变化对振动测试信号的调幅作用,建立了行星齿轮箱局部故障振动信号模型,推导了频谱解析表达式。给出了太阳轮、行星轮和齿圈局部故障特征频率的计算公式。通过实验信号分析验证了理论推导结果,应用频谱分析方法分别诊断出了太阳轮、行星轮和齿圈局部故障。

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