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Fault diagnosis method for gyro measurement system

A fault diagnosis and measurement system technology, applied to measurement devices, instruments, etc., can solve the problem of non-orthogonal configuration diagnosis abnormality of gyro slanted installation and other problems, so as to overcome the abnormal influence of fault diagnosis, achieve strong achievability and improve effect of probability

Active Publication Date: 2013-08-07
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0006] The above method has the following disadvantages: it generally focuses on the diagnostic algorithm, and most of them are based on the normal configuration of the gyroscope, such as the 3-orthogonal configuration, multiple sets of 3-orthogonal configurations that are mutually redundant, and the 3-orthogonal + 1 oblique configuration. type, etc., but did not consider the diagnostic abnormality caused by the non-orthogonal configuration of the gyroscope. The setting of the balance equation is in accordance with the conventional method. In fact, the accuracy of diagnosis is closely related to the gyro configuration, balance equation, and diagnosis algorithm. relevant

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Embodiment

[0049] Aiming at the problem of gyro faults, the present invention provides a fault diagnosis method for a gyro measurement system. Take the installation of 9 obliquely mounted gyroscopes on the satellite as an example, suppose the installation positions of gyroscopes G1~G9 are:

[0050] O g1 =[0.57735105,-0.43870300,0.68862577];

[0051] O g2 =[0.57735105,0.17672209,-0.79714181];

[0052] O g3 =[0.57735105,-0.37701591,-0.72424082];

[0053] O g4 =[0.57735105,0.60198402,0.55161672];

[0054] O g5 =[0.57735105,0.81571891,0.03561506];

[0055] O g6 =[0.57735105,-0.77870610,0.24552509];

[0056] O g7 =[0.57735105,0.10657412,0.80951079];

[0057] O g8 =[0.57735105,-0.75434397,-0.31245950];

[0058] O g9 =[0.57735105,0.64776985,-0.49705129].

[0059] (1) Analyze the top configuration

[0060] The angle relationship between the tops is shown in the table below. It can be seen from the table that the three groups of gyroscopes G1G3G5, G2G4G6, and G7G8G9 are orthogonal combinations, but the install...

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Abstract

The invention discloses a fault diagnosis method for a gyro measurement system. The method comprises the steps of: (1) determine the configuration type of gyros, and then calculating the angle relationship between the gyros; (2) determining the weight coefficient of a gyro balance equation; (3) determining judgment gyro sequencing; (4) designing a balance equation according to the determined judgment gyro sequencing result in step (3); and (5) designing a fault diagnosis method. The method provided in the invention can substantially improve the probability of gyro fault diagnosis, has strong project realizability, and can adapt to fault diagnoses of gyros with any complex configuration.

Description

Technical field [0001] The invention belongs to the field of spacecraft attitude and orbit control, and relates to a fault diagnosis method of a gyro measurement system. Background technique [0002] The gyro measurement system is an angular velocity sensor that is often used in spacecraft attitude and orbit control tasks, and its reliability directly affects the reliability of the spacecraft. With the continuous development of spacecraft technology, higher and higher requirements are put forward for the autonomous operation of spacecraft. The realization of autonomous fault diagnosis and processing of the gyro measurement system is of great significance for improving the autonomous operation capability of the spacecraft. The gyroscope installation configuration includes the main-standby 3 orthogonal configuration, the 3 orthogonal + 1 inclined configuration, and the multiple inclined configuration. The gyro configuration often affects the design of the fault diagnosis algorithm ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 王新民袁军张俊玲姚宁曹永梅程莉周剑敏赵性颂王哲魏懿
Owner BEIJING INST OF CONTROL ENG
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