发明名称 |
Automatic gain control of a closed loop fiber optic gyroscope using non-linear control laws |
摘要 |
A closed loop gain circuit controls the gain of a variable gain amplifier and provides a stable AGC response irrespective of the actual gain level. The amplifier may be arranged to amplify electrical signals output from a fiber optic gyroscope. A perturbation injection circuit provides a perturbation signal ±d to a phase modulator connected to the fiber optic gyro. A perturbation compensation circuit applies perturbation compensation signals to signals output from the variable gain amplifier and produces a compensated signal by reducing the magnitude of the perturbation in the amplified signal output from the variable gain amplifier. A gain error circuit connected to the perturbation compensation circuit produces a gain error signal that indicates the magnitude of the perturbation signal remaining in the amplified signal after perturbation compensation. A feedback system provides a gain control signal to the variable gain amplifier to reduce the magnitude of the gain error signal.
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申请公布号 |
US6473182(B1) |
申请公布日期 |
2002.10.29 |
申请号 |
US20010826763 |
申请日期 |
2001.04.04 |
申请人 |
NORTHRUP GRUMMAN CORPORATION |
发明人 |
TAZARTES DANIEL A.;WELKER JAMES G. |
分类号 |
H03G3/30;(IPC1-7):G01C19/72 |
主分类号 |
H03G3/30 |
代理机构 |
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