画像処理を用いたタービンブレードの振動計測(機械力学,計測,自動制御)

概要

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In this study, we proposed the technique to measure vibration of a turbine blade in a turn using an image processing. By using the CCD camera, we captured the end face of a blade in a turn and determined a position of a blade from an image data, and then estimated the amplitude of vibration statistically. The movement of the blade at high speed made a captured image blur, and degraded the estimation of the position of the blade. By processing the blurred image as the inverse problem, we could estimate the position of a blade precisely. Under a supposition that the blade vibrates sinusoidally, the probability density for the blade vibration can be calculated. By comparing the probability density for sine wave with the processed probalility density for the blade, the amplitude of blade vibration could be evaluated.
2003-12-25