Patent ID: 9310341
Filing Date: 2016-04-12
CPC Classification: G01H,G01N

Claim Text:
1. A three-dimensional vibration measurement method comprising: by a distance-measuring device, obtaining shape information of a measurement target by measuring a distance from the measurement target; by a vibrometer, sequentially emitting laser beams to a vibration measurement point of the measurement target at each of three measuring positions for measuring vibration of the measurement target to measure vibration components at the vibration measurement point; by the vibrometer, obtaining transformation matrices between first to third coordinate systems with respect to each of the measuring positions and a local coordinate system with respect to the vibration measurement point of the measurement target, based on the shape information obtained by the distance-measuring device; by the vibrometer, measuring angles between unit vectors of respective axes of the local coordinate system and direction vectors of the laser beams emitted with reference to the first to third coordinate systems upon measuring the vibration components; and by the vibrometer, measuring three-dimensional vibration of the measurement target based on the vibration components and the angles.