振動ピックアップの水平設置共振に関する検討

抄録

When a vibration pickup is set directly on a surface of a vibrating body, the system has a resonant frequency caused by the mass of pickup and the contact compliance of the setting point. The resonant frequency places restrictions on a measurement frequency range, and causes errors in measurement. This paper is intended to indicate the characteristics of the horizontal resonant frequency. THe horizontal resonant frequency is always lower than the resonant frequency in the vertical direction and is affected more sensitively by the condition of setting points. Furthermore, it is proved graphically that the height of center of gravity and contact areas of pickup have a considerable effect upon the horizontal resonant frequency.