A temperature control method for the optical path of a photoelectric separation fiber optic gyroscope

Abstract

The invention discloses a method for controlling temperature of a photoelectric separate fiber optic gyroscope optical path, which comprises steps: a magnetic shielding outer cover (2) is arranged on an optical fiber ring skeleton (4), and forms a closed magnetic shielding space with the optical fiber ring skeleton (4), the magnetic shielding outer cover (2) uses a covered edge design, and is clung to the upper edge of the optical fiber ring skeleton (4) after being mounted, and is packed on the inner wall of the optical fiber ring skeleton (4) along the peripheral direction, electrical heating bands are pasted on the optical fiber ring skeleton (4), and heat is transmitted to the optical fiber ring skeleton (4) through the magnetic shielding outer cover (2), and is transmitted to an optical fiber ring (3) through the optical fiber ring skeleton (4), thereby enabling the optical fiber ring (3) to achieve temperature balance. The method for controlling temperature of the photoelectric separate fiber optic gyroscope optical path enables the temperature in the optical fiber ring (3) to be uniformly distributed, a gyroscope works in a sett temperature range, prevents bias drift which is produced by shupe in effect, and achieves the performance demands of high precision optical fiber gyroscope zero bias and scale factors.

Description

technical field [0001] The invention relates to a temperature control method for the optical path of a photoelectric separation type fiber optic gyroscope. Background technique [0002] The fiber optic gyroscope is an all-solid-state inertial instrument based on the Sagnac effect, which is used to measure the angular rate of the carrier and is the core component of the inertial system. [0003] As an opto-mechanical-electrical integration sensor, the influence of temperature on the performance of fiber optic gyroscopes cannot be ignored. Temperature has become one of the problems faced by fiber optic gyroscopes towards engineering, and more and more attention has been paid to the temperature performance. As the optical fiber coil of the sensitive element, because the external temperature changes with time, the refractive index of each point of the optical fiber coil changes with the temperature change, and the time for the two beams of light waves propagating in opposite dir...

AI Technical Summary

Problems solved by technology

However, due to the uncertainty of environmental changes, it is difficult to establish a fiber optic gyroscope temperature compensation model, which is easily affected by many other factors such as test conditions and equipment status, and it is difficult to achieve accurate compensation for gyroscope drift in the full temperature range; With certain differences in temperature characteristics, the same temperature compensation model is not applicable to other gyroscopes, which is not conducive to the engineering of gyroscope mass production

Images