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Hybrid filtering method for multi-source noise of gyroscope and test platform

A technology for testing platforms and gyroscopes, applied in the direction of Sagnac effect gyroscopes, instruments, measuring devices, etc.

Active Publication Date: 2016-08-17
BEIHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical solution problem of the present invention is: a kind of hybrid filter method and test platform for the multi-source noise of gyroscope designed, overcome the lack of research on the multi-source noise of gyroscope by the existing attitude control system test platform, this test platform studies aircraft The impact of gyroscope noise on the control accuracy of the attitude control system during flight; a hybrid filtering method is proposed to suppress the multi-source noise of the gyroscope, which improves the filtering accuracy and improves the control performance

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Embodiment Construction

[0039] The specific implementation manner of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] Taking the semi-physical simulation test of the attitude control system of the micro-nano three-axis stabilized satellite as an example, the test platform and the hybrid filtering method for the multi-source noise of the gyroscope are explained.

[0041] Such as figure 1 As shown, the test platform of the present invention is provided, and its components include a real-time simulation target machine 1, a three-axis rate turntable 2, a fiber optic gyroscope 3, a star sensor 4, a star emulator 5, an attitude determination module 6, an attitude The control module 7 and the actuator 8; the real-time simulation target machine 1 receives the torque signal output by the actuator 8, synchronously calculates the dynamics and kinematics model of the micro-nano satellite, and solves the rolling, pitch and yaw axis of the micr...

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Abstract

The invention provides a hybrid filtering method for the multi-source noise of a gyroscope and a test platform. The test platform comprises a real-time simulation target machine, a triaxial rate rotary table, a triaxial gyroscope, a star sensor, a star simulator, an attitude determination module, an attitude control module and an executing mechanism. According to the hybrid filtering method for the multi-source noise of the gyroscope, the device noise of the gyroscope is suppressed through H2 optimization, and the modeling error of a filtering system is inhibited through H-infinity optimization. In combination with the H2 optimization and the H-infinity optimization, a hybrid filter is designed, so that the estimated error meets the requirement of a performance index. The hybrid filtering method designed for the multi-source noise of the gyroscope effectively improves the accuracy of the attitude determination. Based on the method, the attitude determination module of the test platform is running in real time. The test platform is directed to verify the effectiveness and the engineering practicality of the hybrid filtering method for the multi-source noise of the gyroscope, thus being applicable to the ground simulation verification in the aerospace field.

Description

technical field [0001] The invention relates to a hybrid filtering method and a test platform for gyroscope multi-source noise, and the test platform can be used to verify various filtering methods including the hybrid filter method for gyroscope multi-source noise; A hybrid filtering method is proposed to suppress it, which can significantly improve the filtering accuracy of the gyroscope and further improve the control performance of the attitude control system. Background technique [0002] As a device sensitive to angular motion, the gyroscope is not only an important instrument for vehicle navigation and driving, but also a core component of the vehicle control system, inertial navigation system and inertial guidance system, thus becoming an important part of inertial technology . The gyroscope contains multi-source noise, and the multi-source noise can be divided into two categories, one is the device noise whose statistical characteristics of the noise are known, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/72G01C25/00
CPCG01C19/72G01C25/00
Inventor 郭雷王春乔建忠张培喜李文硕
Owner BEIHANG UNIV
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