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Fiber-optical Gyroscopes (FOG) is becoming affordable for many applications such as vehicle navigation and stabilization. Environmental impact of vibration can't be ignored. This paper researched into the characteristic of vibration of structure of FOG. Base on the model analysis using ANSYS WORKBENCH (finite element analysis software), we did dynamic analysis for structure of FOG. On the model analysis,...
In this paper, a new constant temperature controller is set up based on the thermoelectric coolers. It can provide a wide stable temperature environment in which the Fiber Optical Gyroscope works. The constant temperature controller works well in the testing process and meets the design requirements successfully. It has many significant advantages such as a short warm-up time, high accuracy and no...
To take full advantage of inertial components of fiber-optic gyroscope strapdown inertial navigation system (FOG SINS), the influence of installation error of FOG and accelerometer on the output of FOG SINS should be considered. The characteristic of vibrant signal is picked up by analyzing the signals of accelerometer with power spectral density, then an effective vibrant error compensation scheme...
In order to improve the accuracy of strapdown inertial navigation system, the constant drift of gyro and the bias of accelerometer in inertial measurement unit (IMU) will be translated into periodic signal by the rotation of IMU, and the undesirable effects of constant drifts of inertial components can be eliminated by integral operations. The uniaxial unidirectional and reciprocating rotary compensation...
The instability of polarization state in interference fiber optic gyroscope (FOG) restricts the precision and stability of FOG. There are two methods to increase FOG's precision and stability, that is, to maintain or eliminate the state of polarization in fiber. Using Lyot fiber depolarizer not only reduces the effects of the states of polarization on the performance of FOG, but decreases the cost...
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