一种三轴光纤陀螺时分复用方案的设计与分析

Design and analysis for a time-division multiplexing scheme of three-axis fiber optic gyroscope

目前三轴一体化已成为国内光纤陀螺一个新的研究热点。提出一种光学敏感部分共用光源与探测器,信号处理部分采用单信号处理电路分时处理的三轴光纤陀螺组合技术方案。分析了信号处理中前放滤波、三轴控制时序和反馈电路中的通道选择。测试结果表明,其指标达到了低精度光纤陀螺的性能要求,适用于小型化、低成本应用背景。

A combination technical scheme of three-axis fiber optic gyroscope was presented, in which its optical sensitive shared the light source and the detector, and its signal processing part adopted the division-time processing scheme in single signal processing circuit. The pre-amplifier filter and three-axis control sequential and passageway option in feedback circuit were analyzed. The testing results indicate that the index has reached the performance requirement for low precision FOG, and this scheme is suitable for miniaturization and low cost application.