A satellite three-dimensional rotation amount testing device and testing method
A technology of three-dimensional rotation and test method, which is applied in the direction of measuring device, static/dynamic balance test, machine/structural component test, etc. It can solve the difficulty of accelerometer installation and calibration, rarely consider the change of satellite center of gravity, and easily cause installation Errors and other problems, to achieve the effect of simple installation and calibration, reduce the difficulty of installation and calibration, and reduce installation errors
Active Publication Date: 2022-04-05
FUZHOU UNIV
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Problems solved by technology
The previous accelerometer-based rotation measurement scheme rarely considered the satellite's center of gravity change (satellite antenna deployment and fuel, compressed gas consumption), and had strict requirements for the mutual installation distance and installation orientation of all accelerometers
In the case of scattered installation of accelerometers, the above installation requirements are prone to installation errors, while the centralized installation of accelerometers will increase random errors caused by random noise and irreversible residual errors
The traditional accelerometer-based rotation measurement scheme will bring great difficulties to the installation and calibration of the accelerometer
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[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] The invention provides a satellite three-dimensional rotational amount testing device and testing method. Six sets of accelerometers are dispersedly installed in the satellite. uniaxial accelerometer, the other three groups of accelerometers include a lightweight thin plate, two uniaxial accelerometers arranged in parallel and collinearly in the measuring direction, and a uniaxial accelerometer arranged in parallel and non-collinearly in the measuring direction. During the rotation of the satellite, the relative positions of the six accelerometers remain unchanged, and the three-dimensional rotation of the satellite can be obtained by calculating the measurement results of the six accelerometers.
[0027] Such as figure 1 As shown, the satellite three-dimensional rotational amount testing device of the present invention compri...
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The invention relates to a satellite three-dimensional rotation amount testing device and testing method. Six sets of accelerometers are dispersedly installed in the satellite, and the three sets of accelerometers include a light-weight thin plate and two single-units arranged in parallel and collinearly in the measuring direction. Axis accelerometer, the other three groups of accelerometers include a lightweight thin plate, two uniaxial accelerometers with parallel and collinear measurement directions, and a uniaxial accelerometer with parallel and non-collinear measurement directions. During the rotation process, the relative positions of the six accelerometers remain unchanged, and the three-dimensional rotation of the satellite can be obtained by calculating the measurement results of the six accelerometers. The test device and the test method are beneficial to reduce the difficulty of installation and calibration, reduce the installation error, and further improve the measurement accuracy.
Description
technical field [0001] The invention relates to the technical field of three-dimensional rotation amount testing, in particular to a satellite three-dimensional rotation amount testing device and a testing method. Background technique [0002] Rotation measurement is widely used in human activities. The so-called rotation includes angular displacement, angular velocity and angular acceleration. The rotation determines the attitude of the satellite, which is an important basic parameter of the satellite, and determines the orientation and effective working area of the satellite. Gyroscopes are usually used to measure satellite rotation, but high-precision gyroscopes are usually expensive and bulky, while low-precision gyroscopes have problems such as poor durability, large zero-bias drift errors, and poor impact resistance. Since the acceleration of a certain point on a satellite in a certain direction contains rotation information when the satellite is flying, an array fo...
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IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 杨鹏飞党斐
Owner FUZHOU UNIV