消除光纤陀螺死区的方法研究

Method for eliminating the deadband of FOG

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 and detecting principle of FOG determines that it has no deadband. The deadband of FOG is caused by electronic crosstalking. The paper describes the measurement of deadband, analyzes and derives the mathematic expression of causing deadband. The improving method is put forward by adding the sine signal in feedback control loop. The experiment verification is made. The result shows that the method can greatly eliminate the deadband, and has no bad influence on other static performance of FOG.