회전 속도 Vector 계측을 위한 공간필터 검출기의 개발

A Development of SFD for the measurement of rotational velocity vector

In this paper, we propose the non-contact method to measure rotational speed vector using spatial filtering method. The rotational speed $\omega$ is known by the frequency of output sinusoidal signal direct proportional to that and the rotational direction is given by the phase delay from the weighting function design of spatial filter.