| 摘要 |
PURPOSE: A system and a method for calculating a vibration displacement are provided to calculate a vibration displacement in various axial directions such as an X-axis, a Y-axis, and a Z-axis. CONSTITUTION: A system for calculating a vibration displacement includes a mirror(202) attached to a vibrating body(201) for detecting a vibration displacement. A light emitting part(200) is installed at a position which is separated from the mirror by a predetermined distance. A plurality of short wavelength light receiving parts(203-1) are provided to detect the light having a special wavelength by receiving and filtering light reflected through the mirror, and to convert the detected light having the special wavelength into an electrical signal. A plurality of vibration displacement calculating devices(204) calculate the vibration displacement of the vibrating body(201) by using the electrical signal converted in the short wavelength light receiving parts.
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