A Closed-loop Control System of Small Fiber Optic Gyroscope
A fiber optic gyroscope and closed-loop control technology, which is applied in Sagnac effect gyroscopes, gyroscopes/steering sensing devices, instruments, etc., can solve the problems of reducing the volume of closed-loop control systems, unable to use small fiber optic gyroscopes, etc., to reduce complexity high degree of stability, strong anti-common mode interference, the effect of reducing the volume
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[0038] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0039] The invention provides a closed-loop control system of a small fiber optic gyro. , D / A converter B these two devices.
[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. like figure 2 As shown, the present invention includes an optical fiber ring, a Y-wave guide, a coupler, a detector, two differential filtering and amplifying circuits, an A / D converter, a microcontroller, and a D / A converter. The microcontroller may employ an FPGA (Programmable Gate Array) but is not limited to the FPGA. The microcontroller is divided into demodulation module, control correction module, step wave generation module, addition module, ±(π / 2) phase difference modulation module according to the realization functions. The microcontroller also includes reset error accumulation module, 2π rese...
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