Simulation Study on Digital Control Model of Fiber Optic Gyro SLD Light Source

Fiber Optic Gyroscope is an angular velocity sensitive device based on Sagnac effect. Super Luminescent Diode (SLD) is a widely used light source in fiber optic gyroscope, and its characteristics will directly affect the overall performance of gyroscope. In this paper, the working mechanism of SLD l...

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Bibliographic Details
Published in:Journal of physics. Conference series 2023-07, Vol.2547 (1), p.12003
Main Author: Zhao, Lingxuan
Format: Article
Language:English
Subjects:
Angular velocity
Center WaveLength
Fiber Optic Gyroscope (FOG)
Fiber optic gyroscopes
Fiber optics
Fuzzy control
Fuzzy PID
Incremental PID
Light
Light sources
Photoelectricity
Physics
Proportional integral derivative
Sagnac effect
SLD Light Source
Superluminescent diodes
Three dimensional models
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Summary:Fiber Optic Gyroscope is an angular velocity sensitive device based on Sagnac effect. Super Luminescent Diode (SLD) is a widely used light source in fiber optic gyroscope, and its characteristics will directly affect the overall performance of gyroscope. In this paper, the working mechanism of SLD light source is studied, and the photoelectric characteristics of SLD light source and the influence of light source temperature and driving current on center wavelength are analyzed. According to the relationship between the central wavelength of the light source and the driving current and die temperature, a three-dimensional model of the central wavelength of the light source is obtained. In order to control the driving current and die temperature quickly and stably, the fuzzy PID control scheme of die temperature and incremental PID control scheme of driving current are studied and designed. Based on the three-dimensional model of the center wavelength of light source, the center wavelength of SLD light source is controlled stably and quickly.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2547/1/012003