发明名称 |
GYROSCOPE MODE SHIFT DETECTION AND SCALE FACTOR COMPENSATION |
摘要 |
A method for maintaining measurement accuracy of a ring laser gyroscope is disclosed. The method involves periodically measuring a path length control voltage in the ring laser gyroscope over a prescribed temperature range. When a first path length controlled by the path length control voltage deviates at least one wavelength from a nominal path length, the method detects the change in the path length as a mode shift. For each mode shift, the method applies a path length correction to maintain the first path length at a target path length over the prescribed temperature range. The method can apply a correction to a measurement signal output of the ring laser gyroscope by adjusting a calibrated scale factor depending on an actual integer number of wavelengths achieved during a mode shift.
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申请公布号 |
US2010014092(A1) |
申请公布日期 |
2010.01.21 |
申请号 |
US20070750773 |
申请日期 |
2007.05.18 |
申请人 |
HONEYWELL;HONEYWELL INTERNATIONAL INC. |
发明人 |
FELLOWS DAVID O.;TAN YING;CALLAGHAN TIMOTHY J.;SCHOBER CHRISTINA M. |
分类号 |
G01C19/68 |
主分类号 |
G01C19/68 |
代理机构 |
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代理人 |
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地址 |
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