Method of reducing thermal-induced errors of a fiber optic gyroscope by adding additional winding layers

Area of Science:

• Optoelectronics
• Mechanical Engineering
• Sensor Technology

Background:

• Fiber optic gyroscopes (FOGs) are susceptible to thermal-induced errors, impacting their environmental adaptability.
• Current winding methods to mitigate these errors often require high precision, limiting practical application.
• Temperature fluctuations significantly affect FOG performance and accuracy.

Purpose of the Study:

• To propose and evaluate an improved winding method for FOGs to reduce temperature-induced errors.
• To investigate the efficacy of adding extra winding layers on the fiber coil's outer surface.
• To explore further error reduction through parameter estimation and compensation.

Main Methods:

• Development of a novel winding technique involving additional outer layers on the FOG fiber coil.
• Conducting simulations under controlled and time-varying temperature conditions.
• Performing experimental validation of the proposed winding method.
• Implementing parameter estimation and error compensation strategies.

Main Results:

• The proposed additional winding layers significantly reduced thermal-induced rate errors in FOGs.
• Both simulation and experimental results confirmed the effectiveness of the enhanced winding method.
• Parameter estimation and error compensation further minimized residual thermal-induced errors.

Conclusions:

• The enhanced winding method with additional outer layers offers a practical solution for mitigating FOG temperature errors.
• This approach improves the environmental adaptability of FOGs without overly complex winding requirements.
• Combining the winding technique with estimation and compensation provides a comprehensive strategy for high-accuracy FOGs.