Device and method for testing three-dimensional rotation amount of fixed-wing aircraft
A technology of test device and test method, which is applied in the direction of measurement device, machine/structural component test, static/dynamic balance test, etc., can solve the problem of easy installation errors, increase random errors, and rarely consider the change of the center of gravity of fixed-wing aircraft And other issues
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 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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[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 fixed-wing aircraft three-dimensional rotation measurement device and testing method which are easy to install. Three groups of accelerometers are respectively installed on the nose of the fixed-wing aircraft and two wing tips, and each group includes a light-weight thin plate And the four parallel uniaxial accelerometers 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 obtained after certain calculations The three-dimensional rotation amount of the object whose center of gravity changes.
[0027] Such as figure 1 As shown, the fixed-wing aircraft three-dimensional rotational amount testing device of the present invention comp...
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The invention relates to a device and method for testing the three-dimensional rotation amount of a fixed-wing aircraft. Three groups of accelerometers are respectively arranged on a nose and two wingtips of a fixed-wing aircraft; each group comprises a light thin flat plate and four accelerometers which are arranged on the flat plate and have parallel measurement directions, wherein the relativepositions of the three groups of accelerometers are kept unchanged in the rotation process of the fixed-wing aircraft. The spatial three-dimensional rotation amount of the fixed-wing aircraft can beobtained by calculating the measurement results of the three groups of accelerometers to a certain extent. According to the testing device and the testing method, the installation and calibration difficulty is reduced, the installation error is reduced, and the measurement precision is improved.
Description
technical field [0001] The invention relates to the technical field of three-dimensional rotation measurement, in particular to a three-dimensional rotation measurement device and method for a fixed-wing aircraft. 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 fixed-wing aircraft and is an important basic parameter of the fixed-wing aircraft, which is used to describe the flight attitude of the fixed-wing aircraft. Fixed-wing aircraft rotation measurement 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 errors, and poor impact resistance. Since the acceleration of a certain point on a fixed-wing aircraft in a certain direction contains rotation information when the airc...
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Login to View More IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 杨鹏飞党斐
Owner FUZHOU UNIV