How Do Fiber Optic Gyros Work?
As an advanced inertial measurement device,fiber optic gyro plays a vital role in many fields such as attitude heading reference system、unmanned driving、servo tracking, photoelectric hoisting、high-speed rail detection.
AVIC's sensing products have emerged as vital components in the global aerospace and autonomous vehicle domains. Their remarkable dependability and precision have established a solid reputation in these highly challenging sectors.
1、What is Fiber Optic Gyros？
Fiber optic gyroscope is a kind of inertial sensor based on optical principle.
It uses the interference phenomenon of light and the "Sagnac effect" to measure the rotational angular velocity of an object. The core component of fiber optic gyroscope is a ring optical path wound by fiber. When the gyroscope rotates, the two beams of light traveling in opposite direction along the ring optical path will produce a difference in optical path, resulting in a change in the interference fringe. By detecting and measuring this change, the angular speed of rotation can be precisely determined.
2、What are the main applications of fiber optic gyroscope？
Fiber optic gyroscope has the advantages of high precision, high reliability, strong anti-interference ability, etc., and is widely used in the following fields:
- Navigation: the compass is an important navigation equipment for ships. The fiber optic gyrocompass based on the strapdown inertial navigation system has a rotating axis corresponding to the three axes of the ship's coordinate system. It can not only be used as a high-precision course information source to realize automatic north finding and pointing, but also obtain reliable data such as course turning rate, roll and pitch Angle and course rotation rate, so as to further promote the automated development of ships and ensure the maneuvering effect and navigation safety of ships.
- Aerospace and space: high-precision interferometric fiber optic gyroscopes are generally used in aerospace and space applications. Strapdown inertial navigation system with interferometric fiber optic gyroscope (IFOG) as the main inertial component can provide the aircraft with three-dimensional angular velocity, position, Angle of attack and sidering-slip Angle, realize the tracking and measurement of rocket launch, and can also be used for space vehicle stability, photography/mapping, attitude measurement control, motion compensation, EO/FLIR stability, navigation and flight control. Among them, the combination of fiber optic gyro and GPS with high accuracy and reliability has become a typical configuration of spacecraft attitude determination system at home and abroad.
- Civil aspects: focus on the application of low and medium precision fiber optic gyroscope, such as automatic navigation, positioning and orientation of ground vehicles, vehicle control; Attitude control of agricultural aircraft for sowing, spraying pesticides and other operations; In underground engineering maintenance, it can be used as a positioning tool and rescue tool to find the location of damaged power lines, pipelines and communication optical (electrical) cables; It can also be used for geodetic survey, mineral exploration and production, oil exploration, oil drilling guidance, tunnel construction and other positioning and path survey, as well as the use of fiber optic gyro rotation Angle and line displacement to achieve dam slope measurement.
3、AVIC'S High Precision Fiber Optic Gyroscope
Our team has extensive industry experience and expertise and is committed to providing you with quality products and excellent service. Whether it is a large industrial application or a small consumer electronic device, we can provide suitable fiber optic gyroscope products and supporting services according to the specific requirements of customers and ensure timely delivery and comprehensive after-sales support.
- Excellent accuracy: The ability to accurately measure rotational angular velocity in a variety of complex environments provides the most accurate data support for your application.
- Excellent stability: After rigorous testing and verification, it maintains stable performance over a long period of use, reducing errors and maintenance costs.
- Wide applicability: Suitable for a variety of different application scenarios, we can provide customized solutions according to your specific needs.
4、Summary
The fiber optic gyroscope has become an important support in the field of modern navigation and measurement with its advantages of high precision, stability, fast response, small size, long life and gradual cost reduction, and plays an indispensable role in promoting scientific and technological progress and social development.
