Satellite three-dimensional rotation amount testing device and testing method
A three-dimensional rotation and testing device technology, which is used in measurement devices, static/dynamic balance testing, and machine/structural component testing. errors, etc.
Active Publication Date: 2020-09-15
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 a testing method. Six groups of accelerometers are dispersedly installed in a satellite; the three groups of accelerometers comprise a light thin flat plate and two single-axis accelerometers which are parallel in measurement direction and are arranged in a collinear manner; the other three groups of accelerometers comprise the light thin flat plate, the two single-axis accelerometers which are parallel in measurement direction and are arranged in the collinear manner, and a single-axis accelerometer which is parallel in measurement direction and is arranged in the non-collinear manner; and in a rotating process of a satellite, relative positions of the six groups of accelerometers are kept unchanged,and a spatial three-dimensional rotating amount of the satellite can be obtained by calculating the measurement results of the six groups of accelerometers to a certain extent. According to the testing device and the testing method, installation and calibration difficulty is reduced, an installation error is decreased, and measurement precision is improved.
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