Method and apparatus for determining phase sensitivity of an accelerometer based on an analysis of the harmonic components of the interference signal방법과 간섭 신호의 조화 성분음의 분석을 기반으로 가속도계의 상 감도를 결정하기 위한 장치

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A method and apparatus for determining phase sensitivity of an accelerometer based on an analysis of the harmonic components of the interference signal, which can estimate phase lags of an accelerometer through an analysis of the interference signal obtained using a single photo-detector when the accelerometer moves in sinusoidal motion with an initial phase of vibration. The method comprises the steps of obtaining an interference signal in a time domain generated from a signal reflected by an accelerometer and a fixed mirror using a single photo-detector; transforming the interference signal in the time domain into a signal in a frequency domain including a plurality of harmonic signals by Fourier transform; and determining the phase sensitivity of the accelerometer using initial phase of vibration displacement of the accelerometer, which is included in the interference signal in the frequency domain.
Assignee
KAIST
Country
US (United States)
Issue Date
2014-07-08
Application Date
2008-08-22
Application Number
13059769
Registration Date
2014-07-08
Registration Number
8775114
URI
http://hdl.handle.net/10203/229660
Appears in Collection
ME-Patent(특허)
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