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Double-shaft rotation optical fiber strapdown inertia navigation device

A dual-axis rotation and inertial navigation technology, applied in the field of navigation, to achieve the effect of ensuring autonomy, short response time and high stability

Active Publication Date: 2013-03-20
BEIJING AUTOMATION CONTROL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the whole inertial navigation system, the design of the dual-axis rotating mechanism is particularly important. The current dual-axis rotating mechanism is generally used as a rotating platform for experiments

Method used

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  • Double-shaft rotation optical fiber strapdown inertia navigation device
  • Double-shaft rotation optical fiber strapdown inertia navigation device
  • Double-shaft rotation optical fiber strapdown inertia navigation device

Examples

Experimental program
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Embodiment Construction

[0041] In this embodiment, the inertial navigation device is composed of a box body, a two-axis rotating mechanism, an inertial measurement component and a circuit component, such as Image 6 Shown is a top view of the navigation device with the top cover removed.

[0042] Among them, such as figure 1 , figure 2 Shown is a top view and a rear view of the inertial measurement unit in the strapdown inertial navigation device of this embodiment.

[0043] The table body 4 is a hollow hexahedron, and the adjacent surfaces are perpendicular to each other. The X fiber optic ring 1, the Y fiber optic ring 2, and the Z fiber optic ring 3 are installed on the three mutually perpendicular surfaces of the table body 4 through three standard screws respectively. The fiber optic gyro The circuit box 5 is installed inside the table body 4 by four standard screws, the first connector 6 is glued on the surface of the table body 4, and the external connector assembly 7 of the fiber optic gyr...

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Abstract

The invention discloses a double-shaft rotation optical fiber strapdown inertia navigation device which comprises a box body, a double-shaft rotation mechanism, an inertia-measuring unit and a circuit unit. A navigation computer sends control command to a rotation control circuit according to a planned rotation scheme. The rotation control circuit collects information of angle positions of an inner ring and an outer ring of the double-shaft rotation mechanism in real time according to the control command sent by the navigation computer, and calculates control quantity according to a control algorithm. The control quantity is transmitted to the inner ring and the outer ring of the double-shaft rotation mechanism through a power amplifier. The double-shaft rotation optical fiber strapdown inertia navigation device is capable of enabling the double-shaft rotation mechanism provided with the inertia-measuring unit to rotate according to the planned rotation scheme, achieving modulation of deviation between a fiber-optic gyroscope and a quartz beam vibration accelerator, greatly improving self-navigation accuracy of the inertia navigation system and solving the problem that accuracy of the self-navigation accuracy is poor when the inertia navigation system is in long navigation.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a dual-axis rotating optical fiber strapdown inertial navigation device. Background technique [0002] The basic working principle of the inertial navigation system is based on Newton's laws of mechanics. It uses gyroscopes and accelerometers to measure the angular velocity and acceleration of the carrier in the inertial reference system, so as to continuously estimate the speed, position and attitude of the carrier in the navigation coordinate system. . The inertial navigation system is an autonomous navigation system that does not rely on external information and does not radiate energy outward. Its main disadvantage is that the error will diverge over time, which is not conducive to long-term high-precision navigation. [0003] The rotary inertial navigation system installs the inertial device on the rotating mechanism. By controlling the inertial device to reciprocate with the rota...

Claims

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Application Information

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IPC IPC(8): G01C21/18
Inventor 詹双豪刘峰胡平华张丛巨崔鹏程曲雪云唐江河徐策舒钊李爱萍王子静王鹏程刘东斌张伟彬孙国飞申燕超
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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