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A fixed-wing aircraft three-dimensional rotation test device and test method

A test method, three-dimensional rotation technology, applied in the direction of measuring device, machine/structural component test, static/dynamic balance test, etc. Problems such as installation errors occur, so as to achieve the effect of simple installation and calibration, reducing the difficulty of installation and calibration, and reducing installation errors

Active Publication Date: 2022-07-05
FUZHOU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The previous accelerometer-based rotation measurement scheme rarely considered the center of gravity change of the fixed-wing aircraft (caused by fuel consumption and throwing cargo), and there were strict requirements for the 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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  • A fixed-wing aircraft three-dimensional rotation test device and test method
  • A fixed-wing aircraft three-dimensional rotation test device and test method
  • A fixed-wing aircraft three-dimensional rotation test device and test method

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Embodiment Construction

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] The invention provides a three-dimensional rotation amount test device and a test method for a fixed-wing aircraft that is easy to install. Three groups of accelerometers are respectively installed on the nose and two wing tips of the fixed-wing aircraft, and each group includes a lightweight thin plate And four single-axis accelerometers installed on the flat plate with parallel measurement directions, the relative positions of the three groups of accelerometers remain unchanged during the rotation of the fixed-wing aircraft, and the measurement results of the three groups of accelerometers can be obtained after a certain calculation. The center of gravity changes the three-dimensional rotation of an object in space.

[0027] like figure 1 As shown in the figure, the three-dimensional rotation test device of the fixed-wing airc...

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Abstract

The invention relates to a three-dimensional rotation amount testing device and a testing method for a fixed-wing aircraft. Three groups of accelerometers are respectively installed on the nose and two wing tips of the fixed-wing aircraft, and each group includes a light and thin flat plate and is installed on the flat plate. The relative positions of the three groups of accelerometers remain unchanged during the rotation of the fixed-wing aircraft, and the measurement results of the three groups of accelerometers can be calculated to obtain the three-dimensional space of the fixed-wing aircraft. amount of rotation. The test device and the test method are beneficial to reduce the difficulty of installation and calibration, reduce the installation error, and thus 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 three-dimensional rotation amount testing device and a testing method for a fixed-wing aircraft. Background technique [0002] Rotation measurement is widespread in human activities. The so-called rotation amount includes angular displacement, angular velocity and angular acceleration. The rotation amount determines the attitude of the fixed-wing aircraft. It is an important basic parameter of the fixed-wing aircraft and is used to describe the flight attitude of the fixed-wing aircraft. The rotation measurement of fixed-wing aircraft usually uses gyroscopes, but high-precision gyroscopes are usually expensive and bulky, and low-precision gyroscopes have problems such as poor durability, large zero-bias drift error, and poor shock resistance. Since the acceleration of a certain point on a fixed-wing aircraft in a certain direction contains rot...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 杨鹏飞党斐
Owner FUZHOU UNIV