光纤陀螺仪在摇摆状态下的误差测试分析方法

Error testing and analysis method of fiber-optic gyroscope in swaying state

首次提出了利用高频角振动台和角速率积分的方法来测试分析光纤陀螺仪(FOG)在摇摆状态下的测量误差,并试验证明了该误差测试分析方法的有效性。采用高频角振动台,对光纤陀螺仪敏感到的角速率进行积分得到角位移,减去实际的角位移,得到光纤陀螺仪累积的角位移误差。采用这种方法,可以看出摇摆过程中光纤陀螺仪测量误差的变化规律,有利于分析光纤陀螺仪的设计问题,并采取合适的方法抑制角位移误差。该方法弥补了摇摆状态下光纤陀螺仪误差测试分析方法的不足,为光纤陀螺仪的设计和应用提供了一种新的分析测试手段。

A new method to test and analyze on measuring error of fiber-optic gyroscope(FOG)in the state of swaying by using high frequency angular vibration platform and angular rate integral method is proposed and experimentally validated.The proposed method first integrates the sensitized angular rate of the FOG to get the measured angular displacement,then subtracts the real angular displacement to obtain the accumulated angular displacement error of FOG.The changing patterns of the FOG measuring error in the state of swaying can be discovered by using th method,which can be further utilized to analyze the existing problems during FOG designing an suppress the measuring error.The proposed method makes up for the deficiency of the existing testing methods,and provides a new analyze and test method for designing and using FOG.