光纤陀螺用于工程结构形变测量的误差分析

针对传统的测量方法在检测大型工程结构的形变过程中存在仪器架设困难，基准点难以确定，不能实现实时在线测量等局限性，提出了将光纤陀螺仪用于工程结构形变检测的测量方法。简要介绍了光纤陀螺用于轨迹测量的近似算法，具体针对该算法在检测工程结构形变中产生的测量误差进行了分析，并且提出了一系列减小测量误差的相应措施：选择合适的测量运行速度，消除测量基准点引入的测量误差，对陀螺仪自身的漂移进行补偿，根据被测对象设计合理的小车和预设导轨。

Analysis for Measurement Error of Structure Deflection Based on Fiber Optic Gyro

The present measuring method determine the reference points in detecting the deformation of large structure. It is hard to fix the instruments and to detect them continuously. A method that is used to detect the structure deformation based on fiber optic gyro (FOG) is introduced in this paper. An algorithm is put forward to detect the structure deformation by the output of FOG. The measurement error source of the algorithm in engineering application is then analyzed. According to the algorithm, a serial of methods to reduce the measurement error is presented as to select the appropriate velocity of instruments, to eliminate the bias of base point, to compensate the drift of FOG and to design the appropriate dolly and orbit.