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Measuring method of micro angle vibration of spacecraft

A space vehicle and aircraft technology, applied in the inertial field, can solve the problems that space vehicles cannot measure micro-angle vibrations

Active Publication Date: 2014-07-30
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology

[0004] The problem solved by the technology of the present invention is: aiming at the deficiencies of the prior art, it provides a highly reliable, high-precision, small-volume and low-cost space vehicle micro-angle vibration measurement method, which solves the problem that domestic space vehicles cannot accurately measure micro-angle vibrations. Difficulties in Vibration Measurement

Method used

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  • Measuring method of micro angle vibration of spacecraft
  • Measuring method of micro angle vibration of spacecraft
  • Measuring method of micro angle vibration of spacecraft

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with accompanying drawing.

[0041] Such as figure 1 Shown, a kind of measurement system of space vehicle micro-angle vibration of the present invention comprises acceleration measurement combination, resistance sampling circuit, DC blocking amplifying circuit; The current signal is converted into a voltage signal, and the DC-blocking amplifier circuit performs secondary amplification on the voltage signal and filters out the DC component in the signal to obtain a voltage signal corresponding to the line vibration, and then uses a low-frequency line vibration calibration device to standardize the accelerometer measurement combination Calibration, the voltage signal can be converted into low-frequency, micro-level line vibration.

[0042] The acceleration measurement combination is realized by a three-axis high-precision quartz flexible accelerometer, and the accelerometer measurement combination is re...

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Abstract

The invention discloses a measuring system and method of micro angle vibration of a spacecraft. An acceleration measurement combination is arranged in a spacecraft carrier coordinate system, low-frequency minimal-level line vibration, directly related to micro angle vibration, of a carrier is measured, data processing is performed by combining the relative position relationship of the acceleration measurement combination and a spacecraft carrier barycenter, and micro angle vibration of the spacecraft is calculated. The measuring system and method achieves measurement of micro angle vibration of the spacecraft under the space environment, and have the advantages of being high in reliability and accuracy, small in size and low in cost.

Description

technical field [0001] The invention relates to a method for measuring the micro-angle vibration of a space vehicle, which belongs to the technical field of inertia. Background technique [0002] When the space vehicle is in orbit, flutter may occur under the force of moving parts or external mechanical environment, which mainly manifests as steady-state sinusoidal response, random fluctuation, or angle jitter of attenuated oscillation. The magnitude of flutter (generally above 0.1 arc seconds) and frequency spectrum (0.1-500 Hz) vary depending on the interference source and the structure of the aircraft. The micro-angular vibration disturbance of the spacecraft will affect the imaging accuracy or aiming accuracy of the camera or aiming system, and also reduce the accuracy of space science experiments. Therefore, it is of great significance in the field of aerospace applications to accurately and real-time measure the small-scale angular vibration of the spacecraft, and use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/06
Inventor 王松刘海涛滕纲刘尔静张瀚冯帅
Owner BEIJING RES INST OF TELEMETRY
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