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And closed-loop interferometric fiber optic gyroscope for sawtooth bias modulation
And closed-loop interferometric fiber optic gyroscope for sawtooth bias modulation
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机译：闭环干涉式光纤陀螺仪用于锯齿形偏置调制
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摘要
Fiber optic gyroscope having electromagnetic waves propagating in opposite directions through the optical fiber coil detects the rotation around the coil. With the bias modulation, the fiber optic gyroscope of this type bias the speed detection portion of the gyroscope interferogram. By using a sawtooth wave as a bias modulation system with more favorable system is modulated by a sine wave or square wave, various advantages can be obtained. For example, because the drives are clearly different detection signal, it is difficult to sensitive to cross-coupling. In addition, the advantage of using a closed-loop system a sawtooth wave, frequency output that is proportional to the velocity can be obtained, that reduce or eliminate the cause of the dead zone found in the closed-loop gyroscope can be obtained.
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