Small-sized light-weight three-axis gyroscope combination for space navigation

Abstract

The invention relates to a small-sized light-weight three-axis gyroscope combination for space navigation, realizes miniaturization and light weight of the three-axis fiber-optic gyroscope combination for space navigation, expands the application field of closed-loop fiber-optic gyroscopes in the miniaturization of angular velocity measuring devices, and belongs to the field of inertial guidance. According to the invention, one gyroscope digital circuit is used for realizing closed-loop control processing of the three-axis gyroscope signal, compared with the prior art, on one hand, the number of circuits is reduced, the total mass of the gyroscope structure is reduced, the overall size is favorably reduced, on the other hand, the assembly process is simplified, and the reliability of circuit connection is improved.

Description

technical field [0001] The invention relates to a small and lightweight three-axis gyro combination for aerospace, which realizes the miniaturization and light weight of the three-axis fiber optic gyro combination for aerospace, expands the application field of closed-loop fiber optic gyroscopes in the miniaturization of angular velocity measurement devices, and belongs to inertia Guidance field. Background technique [0002] Gyroscope is the core device of various inertial measurement systems. It is used to measure the angular displacement and angular velocity of sensitive carriers relative to inertial space. It can be used for attitude control / stabilization systems of missiles, rockets, satellites and other carriers. The types of gyroscopes currently used in inertial measurement systems mainly include liquid floating gyroscopes, flexible gyroscopes, hemispherical resonant gyroscopes, laser gyroscopes, and fiber optic gyroscopes. [0003] As a new generation of inertial de...

AI Technical Summary

Problems solved by technology

There are three main technical difficulties: first, shortening the length of the optical fiber and reducing the diameter of the optical fiber will reduce the accuracy of the fiber optic gyroscope, and the two need to reach a certain balance; the second is the integration and miniaturization of the fiber optic gyroscope circuit. For gyroscopes, after the circuit is miniaturized, various electronic components are densely arranged. Under the condition of high operating frequency of gyroscope closed-loop, it is easy to cause the weak signal of Sagnac phase difference to be interfered by cross-coupling, resulting in the degradation of gyroscope performance; the third is optical components. After the circuit is further miniaturized, it brings new challenges to the assembly process, and the difficulty of assembly is greatly increased. It is necessary to study new assembly process methods, such as optical path assembly without solder joints and solder joint coating protection process methods, and Research on its long-term reliability

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