A Heterogeneous Gyroscope Combination Mutual Diagnosis Method
A gyroscopic and heterogeneous technology, applied in the field of spacecraft attitude dynamics, to achieve the effect of relaxing installation requirements and improving capabilities
Active Publication Date: 2020-05-26
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology
The conversion relationship between star inertial angular velocity and gyro combination measurement value is one-to-many, that is, it is impossible to use simple matrix inversion to complete the mutual diagnosis relationship between different gyro combinations
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[0023] based on the following Figure 1 ~ Figure 3 , specifically explain the preferred embodiment of the present invention.
[0024] Such as figure 1 As shown, the present invention provides a method for mutual diagnosis of heterogeneous gyro combinations, comprising the following steps:
[0025] The installation polarity of the fiber optic gyro combination and the hemispherical resonator gyro combination on the star is clarified, and the analytical relationship between the measured value of the fiber optic gyro combination and the inertial angular velocity of the star and the analytical relationship between the measured value of the hemispherical resonant gyro combination and the inertial angular velocity of the star are respectively given;
[0026] When the fiber optic gyro combination as the main part fails, use the backup non-failure hemispherical resonant gyro combination to diagnose the failed gyroscope in the main part of the fiber optic gyroscope combination through ...
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A mutual diagnosis method of a heterogeneous gyro combination is characterized in that when a fiber-optic gyro combination used as a main part goes wrong, faulted gyros in the fiber-optic gyro combination used as the main part are diagnosed through an algebraic elimination technology by adopting a backup fault-free hemispherical resonator gyro combination; after the faulted gyros are confirmed, the hemispherical resonator gyro combination becomes the main part, and the fiber-optic gyro combination becomes a backup part; when the hemispherical resonator gyro combination used as the main part goes wrong, faulted gyros in the hemispherical resonator gyro combination used as the main part are diagnosed by the backup fault-free fiber-optic gyro combination; and after the faulty gyros are confirmed, the fiber-optic gyro combination becomes the main part, and the hemispherical resonator gyro combination becomes the backup part. A mutual diagnosis relationship between the fiber-optic gyro combination and the hemispherical resonator gyro combination is established based on the algebraic elimination technology, and the autonomous fault diagnosis capability of a satellite is improved.
Description
technical field [0001] The invention relates to the technical field of spacecraft attitude dynamics, in particular to a heterogeneous gyroscope combination mutual diagnosis method with complex installation relations. Background technique [0002] For safety considerations, satellites are often equipped with multiple groups of gyroscopes. Because the combined work of gyroscopes is relatively stable, one group is generally used for work, and the other group is used for cold backup. Mutual diagnosis between gyro combinations is an important means to locate the faulty gyro when the main component gyro combination is abnormal. In the prior art, the combination of main and backup gyroscopes usually adopts a design consistent with the installation relationship of the star, that is, the same installation polarity. The advantage of this method is that the mutual diagnosis relationship between the gyro combinations is simple, and the disadvantage is that there is a high requirement ...
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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 杨盛庆杜耀珂王文妍汪礼成崔佳
Owner SHANGHAI AEROSPACE CONTROL TECH INST