Multi-gyroscope fault diagnosis and reconstruction method based on non-homogeneous equation solution

Abstract

The invention relates to a multi-gyroscope fault diagnosis and reconstruction method based on a non-homogeneous equation solution, which is suitable for a spacecraft for measuring a plurality of gyroscopes. According to the method, a general non-homogeneous equation set described by m gyroscopes is solved, the equation set contains three unknown quantities and m equations, and through equivalent transformation, the satellite three-axis angular velocity described by m gyroscope measurement values and m-3 groups of gyroscope associated equations are obtained. By processing the associated equations of the gyroscopes, not only can the fault location of a plurality of gyroscopes be quickly realized, but also a plurality of problem gyroscopes can be avoided at the same time to realize the quickself-reconfiguration design of the gyroscope group. The invention provides a universal design method for multi-gyroscope anomaly positioning and reconstruction, is wide in application range, and is suitable for gyroscope autonomous anomaly positioning and reconstruction design of satellites of various models.

Description

technical field [0001] The invention relates to a multi-gyroscope fault diagnosis and reconstruction method, which belongs to the technical field of satellite fault diagnosis and fault-tolerant control. Background technique [0002] With the in-depth application of satellites in various fields, the structure of the whole satellite tends to be complex, and the mission requirements are also improved from general accuracy to ultra-high and very high-precision, from long-term relative reference static state to continuous large-scale maneuver or short-term fast machine. Dynamic changes, even for communication satellites, there are 24-hour uninterrupted service requirements during the service life of more than ten years. For this reason, the configuration of the number of gyroscopes has been added to the satellite's control system. However, due to the impact of the space environment or the long-term aging of equipment, it is not ruled out that the gyroscope will fail for a short ...

AI Technical Summary

Problems solved by technology

However, due to the influence of the space environment or the long-term aging of equipment, it is not ruled out that the gyroscope will fail for a short time or even fail to recover.

However, compared with other sensors, the problem of gyroscopes has a great impact on the control system. Therefore, the control system must have the design capabilities of anomaly detection, positioning and self-reconfiguration for multiple gyroscopes.

[0003] The existing standard algorithms are limited to the detection and positioning of gyroscopes, and cannot directly perform self-reconfiguration operations on gyroscope groups, and the generality of the algorithms is relatively weak

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