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    • 4. 发明授权
    • Diagnostic method and diagnostic device for a slide bearing
    • 滑动轴承的诊断方法和诊断装置
    • US09588015B2
    • 2017-03-07
    • US13582288
    • 2011-02-21
    • Takashi SakoKouichi Tamura
    • Takashi SakoKouichi Tamura
    • G01M13/04G01H1/14
    • G01M13/045G01H1/14
    • A sign of a minor rubbing abnormality of a slide bearing in a diesel engine is accurately detected. In order to realize the accurate detection, the following is performed: detecting waveform data which represents an acceleration of a vibration which occurs when a slide bearing is in operation; transforming acceleration waveform data into an acceleration spectrum of a frequency domain by applying a Fourier transform to the acceleration waveform data; quantifying a plurality of peak information which occurs at a rotational frequency interval of a shaft to be measured in the acceleration spectrum by performing a predetermined signal process combined with rotational frequency information of the shaft; obtaining a characteristic value; monitoring whether the obtained characteristic value has exceeded a predetermined threshold value; and when the characteristic value has exceeded the threshold value, determining that an abnormality has occurred in the slide bearing.
    • 准确地检测到柴油发动机中的滑动轴承的轻微摩擦异常的迹象。 为了实现准确的检测,执行以下操作:检测表示当滑动轴承运行时发生的振动的加速度的波形数据; 通过对加速度波形数据进行傅里叶变换,将加速度波形数据变换为频域的加速度频谱; 通过执行与所述轴的旋转频率信息相结合的预定信号处理来量化在所述加速度频谱中以待测轴的旋转频率间隔发生的多个峰值信息; 获得特征值; 监视所获得的特征值是否已经超过预定阈值; 并且当所述特征值超过所述阈值时,确定所述滑动轴承中发生异常。
    • 10. 发明申请
    • DIAGNOSTIC METHOD AND DIAGNOSTIC DEVICE FOR A SLIDE BEARING
    • 用于滑动轴承的诊断方法和诊断装置
    • US20130006551A1
    • 2013-01-03
    • US13582288
    • 2011-02-21
    • Takashi SakoKouichi Tamura
    • Takashi SakoKouichi Tamura
    • G01N29/46G06F19/00
    • G01M13/045G01H1/14
    • A sign of a minor rubbing abnormality of a slide bearing in a diesel engine is accurately detected. In order to realize the accurate detection, the following is performed: detecting waveform data which represents an acceleration of a vibration which occurs when a slide bearing is in operation; transforming acceleration waveform data into an acceleration spectrum of a frequency domain by applying a Fourier transform to the acceleration waveform data; quantifying a plurality of peak information which occurs at a rotational frequency interval of a shaft to be measured in the acceleration spectrum by performing a predetermined signal process combined with rotational frequency information of the shaft; obtaining a characteristic value; monitoring whether the obtained characteristic value has exceeded a predetermined threshold value; and when the characteristic value has exceeded the threshold value, determining that an abnormality has occurred in the slide bearing.
    • 准确地检测到柴油发动机中的滑动轴承的轻微摩擦异常的迹象。 为了实现准确的检测,执行以下操作:检测表示当滑动轴承运行时发生的振动的加速度的波形数据; 通过对加速度波形数据进行傅里叶变换,将加速度波形数据变换为频域的加速度频谱; 通过执行与所述轴的旋转频率信息相结合的预定信号处理来量化在所述加速度频谱中以待测轴的旋转频率间隔发生的多个峰值信息; 获得特征值; 监视所获得的特征值是否已经超过预定阈值; 并且当所述特征值超过所述阈值时,确定所述滑动轴承中发生异常。