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研究了小信号摄动的Ｈｏｌｍｅｓ型Ｄｕｆｆｉｎｇ振子的混饨及间歇混沌运动．发现策动力与摄动信号间的微小频差是振子产生间歇混饨的原因．得出振子相变对小信号敏感以及对频差较大的周期干扰信号和噪声具有免疫力的结论．通过识别振子的间歇混沌运动可对齿轮单齿缺陷故障进行诊断．
The chaos and intermittent chaos of Holmes-type Duffing oscillator with small signal perturbation are studied. It is found that the small frequency difference between the driving force and the perturbation signal is the reason why the oscillators produce intermittent chaos. It is concluded that the oscillator phase transition is sensitive to small signals and immunity to periodic interference signals and noise with large frequency difference. Through the identification of intermittent chaos vibration oscillator can be single-tooth gear fault diagnosis.