Simulation method for digital closed-loop control logic of fiber-optic gyroscope

Abstract

The invention provides a simulation method for the digital closed-loop control logic of a fiber-optic gyroscope. The simulation method comprises the following steps: establishing a model and simulating according to the model, wherein a fiber-optic gyroscope closed-loop control logic model comprises a digital demodulation model and a digital controller model, and a closed-loop control logic simulation fiber-optic gyroscope model comprises a Sagnac effect model, a deviation modulation model, a step modulation model and phase modulation model; determining parameters needed by simulation, wherein the parameters comprise a system loop closing cycle, a modulation square wave frequency f, a square wave half-cycle sampling point number and a magnification factor; adjusting the magnification factor of a pre-amplifier module and the magnification factor of a post-amplifier module to realize normal loop closing of the fiber-optic gyroscope model in a simulation process; determining whether the output scale factor of the fiber-optic gyroscope is consistent with a required index or not through the waveform and numerical value of an output signal. By adopting the simulation method, designers do not need to perform detailed coding writing and can put more effort into system design and analysis; the project period can be shortened, the working efficiency is increased, and the product cost is reduced.

Description

technical field [0001] The invention belongs to the field of inertial device fiber optic gyroscopes, and more specifically relates to a simulation method for digital closed-loop control logic of fiber optic gyroscopes. Background technique [0002] At present, the logic design method of digital closed-loop fiber optic gyroscope is completed by first writing code, simulating, and then synthesizing the code, layout and wiring. Designing gyro logic in this way requires designers to be familiar with the hardware description languages ​​VHDL and Verilog HDL, and manually write a large amount of code, and then convert the code into specific hardware logic for implementation. At the same time, due to the separate design of the closed-loop control logic, which is separated from the environment of the gyro closed-loop system, it is impossible to simulate and analyze design issues such as logic and digital control from the perspective of the entire system. The problems need to be expo...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above defects or improvement needs of the prior art, the present invention provides a simulation method for the digital closed-loop control logic of the fiber optic gyroscope. A large number of codes are used to realize the digital closed-loop control of the fiber optic gyroscope. If there is a problem, it can only be exposed in the debugging stage, resulting in repeated design and technical problems that waste resources.

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