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High-dynamic control method for fiber-optic gyroscope

A fiber optic gyroscope and control method technology, applied in Sagnac effect gyroscopes, gyroscopes/steering sensing devices, measurement devices, etc., can solve problems such as dynamic performance deterioration and system instability

Active Publication Date: 2021-07-06
安徽华驰动能科技有限公司
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Problems solved by technology

In the existing technology, there are control algorithms to eliminate steady-state errors and closed-loop control to improve temperature characteristics. However, in the environment of high-frequency vibration and shock, the nonlinearity of optical effects and the uncertainty of optical parameters are factors that lead to The main cause of dynamic performance deterioration, which in real control systems can lead to potential system instability

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Based on the influence of optical sensing on the dynamic performance of the closed-loop fiber optic gyroscope, the invention proposes a high dynamic control method of the fiber optic gyroscope to enhance the high dynamic characteristics of the fiber optic gyroscope applied in the inertial navigation system. In the closed-loop fiber optic gyro optical path scheme of the device, the light emitted from the light source is divided into two beams ...

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Abstract

The invention discloses a high-dynamic control method for a fiber-optic gyroscope. The high-dynamic control method comprises the following steps that: 1, the dynamic performance of a fiber-optic gyroscope is analyzed; 2, a mathematical model of a closed-loop control system of the fiber-optic gyroscope is established under the condition of considering noise, time lag and parameter uncertainty; and 3, a control algorithm of the fiber-optic gyroscope is optimally designed, and a state feedback control law is optimally designed, so that the exponential stability of the system is improved, the closed-loop system is still a solution to the control problem meeting the performance index requirement under the condition that noise, time lag and parameter uncertainty exist, and finally, the robust stability of the system can be improved.

Description

technical field [0001] The invention belongs to the technical field of fiber optic gyroscopes, and relates to a high dynamic control method of fiber optic gyroscopes. Background technique [0002] With the development of fiber optic sensing technology, fiber optic gyroscope has become a new type of angular velocity sensitive element with high stability. Compared with traditional inertial devices, it has many advantages such as simple structure, high detection accuracy, no moving parts, high reliability, low cost, and easy integration, making it favored by both military and civilian applications. The accuracy of the fiber optic gyroscope basically determines the accuracy of the inertial navigation system. Due to its own errors, and external temperature changes, magnetic field interference, vibration interference, etc., will affect its output accuracy, the accumulation of errors in the navigation solution will reduce the accuracy of the entire inertial navigation system, even...

Claims

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Application Information

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IPC IPC(8): G01C19/72
CPCG01C19/72G01C19/725
Inventor 王志强韩坤
Owner 安徽华驰动能科技有限公司
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