公开(公告)号：US20120059620A1

公开(公告)日：2012-03-08

申请号：US13059769

申请日：2008-08-22

申请人： Yong Bong Lee ,  Sung Soo Jung ,  Seung-Woo Kim

发明人： Yong Bong Lee ,  Sung Soo Jung ,  Seung-Woo Kim

IPC分类号： G01P15/08 ,  G06F15/00

CPC分类号： G01H1/04 ,  G01H1/00 ,  G01P21/00

摘要： The present invention relates to 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.

摘要翻译： 本发明涉及一种基于对干扰信号的谐波分量的分析来确定加速度计的相位灵敏度的方法和装置，其可以通过分析使用单个光电二极管获得的干扰信号来估计加速度计的相位滞后， 检测器，当加速度计以正弦运动移动时，起始振动阶段。 该方法包括以下步骤：使用单个光检测器从由加速度计和固定镜反射的信号产生的时域中获得干扰信号; 通过傅立叶变换将时域中的干扰信号变换为包括多个谐波信号的频域中的信号; 以及使用包括在频域中的干扰信号中的加速度计的振动位移的初始相位确定加速度计的相位灵敏度。

公开(公告)号：US08775114B2

公开(公告)日：2014-07-08

申请号：US13059769

申请日：2008-08-22

申请人： Yong Bong Lee ,  Sung Soo Jung ,  Seung-Woo Kim

发明人： Yong Bong Lee ,  Sung Soo Jung ,  Seung-Woo Kim

IPC分类号： G01H1/04 ,  G01P21/00

CPC分类号： G01H1/04 ,  G01H1/00 ,  G01P21/00

摘要： 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.

摘要翻译： 一种用于基于对干扰信号的谐波分量的分析来确定加速度计的相位灵敏度的方法和装置，其可以通过对加速度计移动时使用单个光检测器获得的干扰信号的分析来估计加速度计的相位滞后 在正弦运动中具有初始振动阶段。 该方法包括以下步骤：使用单个光检测器从由加速度计和固定镜反射的信号产生的时域中获得干扰信号; 通过傅立叶变换将时域中的干扰信号变换为包括多个谐波信号的频域中的信号; 以及使用包括在频域中的干扰信号中的加速度计的振动位移的初始相位确定加速度计的相位灵敏度。