Information fusion ground verification system for two types of gyroscopes

Abstract

The invention discloses an information fusion ground verification system for two types of gyroscopes. The system comprises a rotary table testing system and a closed-loop testing system. The rotary table testing system comprises a high-precision rotary table and a rotary table computer, the high-precision rotary table is used for applying rotary table input angular velocity to gyroscopes mounted thereon, and the rotary table computer is used for acquiring the rotary table input angular velocity and an angular velocity measured value outputted by the gyroscopes so as to obtain dynamic response models of the gyroscopes of different types. The closed-loop test system comprises a senor, a controller, an execution mechanism, a dynamics simulator and a testing interpretation unit. The system is capable of simulating in-orbit real gyroscope measurement performance, and ground verification of information fusion of different types of gyroscopes is achieved.

Description

technical field [0001] The invention relates to a two-type gyroscope information fusion ground verification system. Background technique [0002] At present, according to the needs of high reliability and long life of the mission, the control system of the spacecraft often uses different types of gyroscopes for combination. When different types of gyroscopes are used in space, the same type of gyroscope is generally used as a group, and the other same type of gyroscope is used as a group. The gyro is another group, forming a combined installation method such as "3+3" or "3+6", which are mutual backups. [0003] If each group of gyroscopes of the same type can participate in the measurement of attitude angular velocity less than three times, it will not be possible to solve the attitude angular velocity of the spacecraft. At this time, it is necessary to use different types of gyroscopes to jointly solve the attitude angular velocity of the spacecraft; When diagnosing faults...

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Problems solved by technology

[0004] Due to the differences in the measurement principles of different types of gyroscopes, their dynamic performance is inconsistent, and sometimes even very different. The existing ground closed-loop test technology directly uses the gyroscope interface (current, serial port) to send the gyroscope excitation calculated by the dynamic equation, without consideration The difference in dynamic response of different types of gyroscopes cannot simulate the real measurement performance of gyroscopes in orbit, and cannot fully verify the correctness and effectiveness of the joint attitude determination and fault diagnosis algorithms of different types of gyroscopes

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