基于光纤陀螺和加速度计的大坝面板挠度测量研究  

Research of Dam Panel Deflection Measuring Based on Fiber Optic Gyroscope and Accelerometer

作　　者：廖铖[1] 蔡德所[1] 黎佛林[2] 李苗[3] 王一立 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]南昌工学院建筑工程学院,江西南昌330108 [3]华北水利水电大学资源与环境学院,河南郑州450011 [4]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《水力发电》2016年第4期101-104,共4页Water Power

摘　　要：结合光纤陀螺和加速度计测量堆石坝面板挠度的特点,利用卡尔曼滤波融合进行捷联解算,解决了光纤陀螺因长时间测量存在漂移影响测量精度、小车运行时有线性加速度加速度计无法准确测量动态倾角的问题。现场试验表明,多次试验结果的重复性较好,测量系统性能稳定,测点连续,精度较高,验证了该方法的可行性和有效性。为高混凝土面板堆石坝面板挠度变形监测提供了新的思路。Two problems exists in panel deflection deformation measurement of concrete face rockfill dam when using Fiber Optic Gyroscope and Accelerometer, that are, the Fiber Optic Gyroscope drift due to the presence of long-term measurement affects measurement accuracy and the accelerometer can not accurately measure the dynamic angle of car when moves in a linear acceleration condition. An approach is proposed to solve them by using strapdown solver of Kalman filter to do data fusion. The on-site experimental results show that the test results have good repeatability, the operation of system is stable, the measuring points are continuous and the measuring precision is high. The method provides a new idea on panel deflection deformation measurement of concrete face rockfill dam.

关 键 词：面板挠度 光纤陀螺 加速度计 卡曼滤波融合 捷联解算 

分 类 号：TV698.1[水利工程—水利水电工程]