In order to solve the problem that the precision evaluation and the choice of moving speed are difficult when fiber optic gyro is used to detect structure deformation,the relationship between the performance of fiber optic gyroscope and the measurement error is analyzed.Based on the error model and the mechanism of engineering structure deformation detection of fiber optic gyroscope,the relationship between bias repeatability error,stability error and deformation detection error of fiber optic gyroscope is analyzed.Then the relationship between the moving speed and detection accuracy of the detection system is also simulated and analyzed.The simulation results show that when the moving speed is relatively fast,the stability error of the fiber optic gyro is the main factor affecting the detection accuracy,when the moving speed is relatively low,the repeatability error of the fiber optic gyro is the main factor affecting the detection accuracy,if a medium-precision fiber optic gyro is used and the moving speed is 2 m/s,the deformation detection accuracy is 8.514 μm(RMS).The research results can provide theoretical guidance for the engineering application of fiber optic gyro structure deformation detection system.
NETL
NSTL
万方数据
