本文以齿轮动力学为基础，推导并建立了单级齿轮传动的一种齿轮失效的数学模型，即：齿根裂纹数学模型。
This article, first, mathematical models of one kind of gear fault in one— stage gearbox (the fatigue crack on root of tooth) are established on the basis of gear dynamics.
为了诊断单级传动齿轮副故障，本文提出信号周期分段处理的方法。
This thesis presented a technique for diagnosing gear pairs faults and introduced the procedure in detail.
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