Adaptive adjustment method for analog signal of fiber-optic gyroscope

The invention discloses an adaptive adjustment method for analog signals of a fiber-optic gyroscope. The reference voltage of an A/D circuit is provided by a D/A modulation circuit; the D/A modulation circuit is connected in parallel to the A/D circuit while being output to the optical fiber ring; the pre-amplification circuit is replaced by an automatic continuous gain control amplification circuit, and the gain of the amplification circuit is controlled by an analog signal, so that the A/D circuit always works in a linear region; according to the method, absolute errors caused by the environment and components are eliminated through the idea of replacing absolute quantity with relative quantity, so that the representation precision of analog signals is greatly improved, the limitation on component type selection is reduced, and the environmental adaptability of the gyroscope is improved. 本发明公开了一种光纤陀螺模拟信号自适应调节方法，A/D电路参考电压由D/A调制电路提供；D/A调制电路输出到光纤环的同时，并联到A/D电路；前置放大电路替换为自动连续增益控制放大电路，放大电路的增益受模拟信号控制，使A/D电路始终工作在线性区