Fiber-optic gyroscope zero-bias stability improvement method based on polynomial fitting technology

Abstract

The invention relates to a fiber-optic gyroscope zero-bias stability improvement method based on a polynomial fitting technology. The method comprises the following steps: step 1, establishing a polynomial fitting compensation model; step 2, selecting polynomial fitting compensation parameters. The fiber-optic gyroscope zero-bias stability improvement method based on the polynomial fitting technology is established and based on the polynomial compensation method, compensation related parameters are quantified, the problem that fiber-optic gyroscope zero-bias is affected by temperature change easily is solved, and the effects of temperature on the accuracy of a fiber-optic gyroscope are reduced. The main content relates to establishment of the fiber-optic gyroscope zero-bias compensation polynomial fitting compensation model and selection of polynomial fitting compensation parameters.

Description

technical field [0001] The invention relates to a method for improving the zero bias stability of an optical fiber gyroscope based on polynomial fitting technology. It belongs to the field of inertial navigation. Background technique [0002] There are many factors that affect the accuracy of the gyroscope, and one of the key factors is the zero bias of the gyroscope. Fiber optic gyroscopes are no exception. However, compared with other gyroscopes, fiber optic gyroscopes are more sensitive to temperature, especially have a greater impact on the zero bias of fiber optic gyroscopes, which has also become a difficult problem in the engineering application of fiber optic gyroscopes. [0003] There are generally two ways to eliminate the influence of temperature on the zero bias of the fiber optic gyroscope. One is the physical method of hard treatment, by improving and changing the manufacturing process of the fiber optic gyroscope, and installing an accurate temperature contro...

AI Technical Summary

Problems solved by technology

Fiber optic gyroscopes are no exception. However, compared with other gyroscopes, fiber optic gyroscopes are more sensitive to temperature, especially have a greater impact on the zero bias of fiber optic gyroscopes. This has also become a difficult problem in the engineering application of fiber optic gyroscopes.

[0003] There are generally two ways to eliminate the influence of temperature on the zero bias of the fiber optic gyroscope. One is the physical method of hard treatment, by improving and changing the manufacturing process of the fiber optic gyroscope, and installing an accurate temperature control system at the same time, but this method does not affect the hardware and related processes. The requirements are extremely high. At present, ultra-high-precision fiber optic gyroscopes generally only exist in the prototype stage of the laboratory; the second is the mathematical method of soft processing, which is relatively easy to implement, but the compensation methods are diverse and difficult to quantify. In addition, due to insufficient consideration of factors in compensation Comprehensive, the correction results are not ideal

Images