A Study on Miniaturization Technology of Light Source Driving Circuit for Fiber-optic Gyroscope

摘要

Fiber-optic Gyroscope (FOG) is the base and core of the inertial navigation and guidance technology. The miniaturization driving circuit of light source is the goal what FOG expected for a long time at several years ago. But the goal has not been realized. In this paper,a driving circuit with high precision and low power dissipation has been designed and realized from practical applications. In addition to low power dissipation, it has reduced the heat radiation and PCB (Printed Circuit Board) measure greatly. Proven by experiments, the current precision is high than 0.01% , the precision of temperature control is less than 0.1℃, and the stability of light power is less than 0.3%, while in a ambient temperature range of-40℃～+60℃. All of these have established a strong base for the integration and miniaturization of FOG.