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德国辛克公司(Carl Schenck AG)最近研制出一种专门的振动测量法——BCU法,可简便地获得滚动轴承运行的状态信号,评估和分析劣化趋势。BCU法采用冲击脉冲测量方法,冲击脉冲的能量和重复频率,随轴承缺陷尺寸的扩大而增强,而轴承的损伤程度又决定其振动峰值的大小,因此,能明确地表征轴承的运行状况。滚动轴承缺陷在扩展过程中的频谱和BCU值密切相关。随着缺陷的扩展,频谱的线数增多,幅值增大,特别是高频段更明显。 BCU法与目前工厂现场广泛应用的瑞典SPM法不同,SPM法评估的是测量参数的对数特性,BCU法评估的是其线性特性。 BCU法的优点:(1)灵敏度高,表1为与其它
Carl Schenck AG of Germany recently developed a specialized vibration measurement method, the BCU method, which provides easy access to status signals for rolling bearing operation and to assess and analyze trends in deterioration. BCU method using the impact pulse measurement method, the impact pulse energy and repetition frequency, with the size of bearing defects increased, and the extent of damage to the bearing determines the size of the vibration peak, so it can clearly characterize the bearing operating conditions. Rolling bearing defects in the expansion of the spectrum and BCU values are closely related. With the extension of defects, the number of spectrum lines increases, the amplitude increases, especially in the high frequency band. The BCU method is different from the Swedish SPM method currently widely used in the factory. The SPM method evaluates the logarithmic characteristic of the measured parameters, and the BCU method evaluates the linear characteristic. The advantages of BCU method: (1) high sensitivity, Table 1 and other