Fully-differential closed-loop fiber-optic gyroscope

Abstract

The invention relates to a fully-differential closed-loop fiber-optic gyroscope, which comprises a PIN tube photoelectric signal converter, a differential signal amplifier, a differential signal sampling type AD, an FPGA signal processor, a differential type D / A output, a differential signal amplifier, a Y waveguide optical path modulator and a gyroscope sensitive angular velocity fully-differential output device, wherein the PIN tube photoelectric signal converter, the differential signal amplifier and the differential signal sampling AD are sequentially connected with the FPGA signal processor, one path of an output signal of the FPGA signal processor is transmitted to the gyroscope sensitive angular velocity fully-differential output device, and the other path of the output signal of the FPGA signal processor is sequentially connected with the differential D / A output, the differential signal amplifier and the Y waveguide optical path modulator. Compared with the prior art, the effect is realized by adopting a fully differential scheme, and the scheme is high in anti-interference capability, can stably work in various complex electromagnetic environments, simplifies the use requirements of users, and can enable the system to be quickly and stably started in various complex environments to achieve expected functions.

Description

technical field [0001] The invention relates to a fiber optic gyroscope, in particular to a fully differential closed-loop fiber optic gyroscope. Background technique [0002] Gyroscope is a kind of angular rate sensor, which is a device sensitive to angular motion in relative inertial space. It is currently the main sensor used to determine the space motion attitude of moving bodies. Due to cost constraints, it is mainly used in various military fields such as sea, land, air and space. . The fiber optic gyroscope implemented by the traditional fiber optic gyroscope simulation scheme is extremely vulnerable to external interference in a complex electromagnetic environment. In order to realize its basic functions, a large number of external protection measures have to be taken, which brings great inconvenience to users. , especially in the field of aviation and aerospace, once there is any omission in the external protective measures and the gyroscope is disturbed, as the co...

AI Technical Summary

Problems solved by technology

The fiber optic gyroscope implemented by the traditional fiber optic gyroscope simulation scheme is extremely vulnerable to external interference in a complex electromagnetic environment. In order to realize its basic functions, a large number of external protection measures have to be taken, which brings great inconvenience to users. , especially in the field of aviation and aerospace, once there is any omission in the external protective measures, the gyroscope is disturbed, as the core sensor of attitude control and inertial navigation, an instantaneous failure will bring catastrophic consequences and cause huge losses

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