结合光纤陀螺特点，讨论了从光纤陀螺耦合器和提取信号进行光反馈控制的方案。
Considering the characteristics of the FOG, a scheme of controlling the driving current by the feed back light from the coupler and detector of FOG was discussed.
此方法以初冷器前吸力值的大小，通过变送器反馈给电磁阀和液力耦合器，实现煤气风机的吸、压力自动调节，不但比改造前传统的“大、小循环”方便、稳定，而且节能、环保、低噪音。
In this way, the cycle is not only more convenient and stable than traditional big-small cycle, but also the energy saving, environment protection and low noisy can be realized.
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