A test method for integral closed-loop fiber optic gyroscope
A technology of fiber optic gyroscope and test method, which is applied in the direction of measuring devices and instruments, can solve problems such as the inability to apply the attitude system and the complexity of the azimuth calculation algorithm, and achieve the effects of high practical value, low cost, and simple and convenient testing
Active Publication Date: 2018-08-17
上海傲世控制科技股份有限公司
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Problems solved by technology
The azimuth calculation algorithm of the three-axis system is very complicated, and the test requires a three-axis high-precision turntable for testing
In this case, the attitude system cannot be applied
Method used
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[0029] Such as figure 1 As shown, an integral closed-loop fiber optic gyroscope test method is used to test the comprehensive performance index of the closed-loop fiber optic gyroscope in different environments, including the following steps:
[0030] 1) Obtain the scale factor K and zero bias value B of the closed-loop fiber optic gyroscope to be tested according to the fiber optic gyroscope test method of GJB 2426A-2004 0 ;
[0031] 2) Test the closed-loop fiber optic gyroscope to be tested in different test environments, including static azimuth change test, dynamic azimuth change test, high and low temperature environment azimuth change test and mechanical environment azimuth change test,
[0032] The static orientation change test specifically includes the following steps:
[0033] Place the closed-loop fiber optic gyroscope to be measured on the horizontal plane, obtain the output value of the closed-loop fiber optic gyroscope to be measured on the horizontal plane, an...
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The invention discloses an integral type closed-loop fiber-optic gyroscope testing method, aiming to test comprehensive performance indexes of a closed-loop fiber-optic gyroscope in different environments.The integral type closed-loop fiber-optic gyroscope testing method includes the steps of 1), obtaining a scale factor K and a zero bias value B0 of the closed-loop fiber-optic gyroscope to the tested by universal methods; 2), testing the closed-loop fiber-optic gyroscope to the tested in different testing environments, wherein testing includes static bearing change testing, dynamic bearing change testing, high-low-temperature environment bearing change testing and mechanical environment bearing change testing; 3), conducting integral computation of output quantities Nt of the closed-loop fiber-optic gyroscope in different testing environments within a specific testing time period so as to obtain a bearing value F of the closed-loop fiber-optic gyroscope to the tested; 4), judging performance of the closed-loop fiber-optic gyroscope to the tested according to the bearing value F obtained by integral computation in different testing environments.Compared with the prior art, the integral type closed-loop fiber-optic gyroscope testing method has the advantages of high practical value, low cost and the like.
Description
technical field [0001] The invention relates to a test method for a closed-loop fiber optic gyroscope, in particular to a test method for an integral closed-loop fiber optic gyroscope. Background technique [0002] Gyroscope is an angular rate sensor, a device sensitive to angular motion in relative inertial space, and is currently the main sensor used to determine the spatial motion attitude of moving bodies. It can be applied to various fields of sea, land, air and sky. Due to the different requirements of various types of fiber optic gyroscopes, the test methods are not uniform. It is also difficult for gyro manufacturers to accurately understand system requirements. The upper system generally uses a three-axis gyroscope and a three-axis accelerometer to achieve attitude and position calculations for navigation or attitude control. The azimuth calculation algorithm of the three-axis system is very complicated, and the test requires a three-axis high-precision turntable...
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IPC IPC(8): G01C25/00
Inventor 李阳鲁浩卢丽勇虞翔
Owner 上海傲世控制科技股份有限公司