【摘要】 针对光纤陀螺输出中存在死区等问题,对光纤陀螺反馈通道的非线性特性进行了研究,通过理论、实验与仿真分析相结合的方式,得出不同深度的方波调制下非线性误差对陀螺输出精度的影响。理论分析表明,方波的调制深度越深,非线性误差对输出的影响就越剧烈,并给出了非线性误差公式。当输入角速率较小时,这种误差就会较容易地观测出。因而采取设计实验与仿真的方法验证上述结论的正确性,并得到了一致的结论。更多还原

【Abstract】 The paper do research about nonlinear feature of fibre optic gyroscope feedback loop because of dead zone phenomenon.By analyzing theory and experiment and simulation,we concluded that square wave modulation of different phase will affect output accuracy of fibre optic gyroscope.The more phases square wave modulation have,the more severe affect output have.And the expression of nonlinear error was given.The error of IFOG output is easily observed when the input rotation rate is low.So we design experiment and simulation to verify the reliability of conclusion above,and get consistent conclusion.更多还原