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光纤陀螺的工作原理和检测方法使得它从理论上将不存在死区,光纤陀螺的死区是因为电路的交叉耦合以及输出方式造成的。文中阐述了光纤陀螺死区的测量方法,分析和推导了死区产生的机理,提出了通过引入正弦信号减小或消除死区的具体措施,并进行了试验验证。结果表明,该措施可以大大减小或消除光纤陀螺死区,同时对陀螺的静态精度不产生影响。
The working principle and testing method of fiber optic gyroscope make it theoretically there is no dead zone. The dead zone of fiber optic gyroscope is due to the circuit cross-coupling and the output mode. The measurement method of fiber optic gyroscope dead zone is described in this paper. The mechanism of dead zone generation is analyzed and deduced. The concrete measures of reducing or eliminating dead zone by introducing sinusoidal signal are put forward. The experimental verification is also given. The results show that this measure can greatly reduce or eliminate the fiber optic gyro dead zone, while the static accuracy of the gyro does not have an impact.