VIBRATIONS MEASUREMENT METHOD Russian patent published in 2014 - IPC G01H9/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment. Investigated object is covered with reflective marks of round shape as a test-object. Binary images of this marks and traces of their vibrational blurring are formed. In the absence of vibrations, determined are coordinates of centre of gravity of each mark, and its radius. In the presence of vibration, additional matrix is formed, each fragment of which is a corresponding vibrational blurring trace of mark turned to 90° relative to the mark centre of gravity. For each mark formed are two areas of non-intersection, each of them is an area of connected elements related to vibrational blurring trace of mark, but not related to additional matrix fragment corresponding to it. Coordinates of centres of gravity of non-intersection areas of mark are determined. From centre of gravity of each mark through centre of gravity of its one non-intersection area directed is aiming beam of this mark. Coordinates of two characteristic points of a mark are determined. Half-width of mark vibrational blurring trace is determined as the difference between the distance from centre of gravity of this mark to its first characteristic point. Value of projection of a mark vibration displacement amplitude vector is determined as the difference between half-width of vibrational blurring trace of the mark and its radius. Direction of this projection is determined as tilting angle of the mark aiming beam in image plane.

EFFECT: enlarging functional capabilities.

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