The Fiber Optic Gyroscope (FOG) is a type of gyroscope that uses the interference effect of optical fibers for measurement. It consists of a light source, optical fiber transmission system, detection system and signal processing system. The light emitted by the light source is transmitted to the detection system through the fiber, and the rotation angular speed of the gyroscope is calculated by measuring the interference effect of the light.
The current status of fiber optic gyroscopes
According to the level of development, the gyro development is divided into three echelons: the first echelon is the US, the UK, France, they have all the gyro and inertial navigation research and development capabilities; The second echelon is mainly Japan, Germany, Russia; China is in the third tier currently. The research of fiber optic gyro in China started late relatively, but with the efforts of the majority of scientific researchers, it has gradually narrowed the gap between us and developed countries.
In recent years, fiber optic gyroscopes have been widely used in inertial navigation, spacecraft attitude control, unmanned driving and seismic measurement. Its advantages include high precision, long life, seismic resistance and so on, making it an important part of inertial navigation system.
At present, the research of fiber optic gyroscope mainly focuses on improving its accuracy and reliability. Researchers improve the accuracy and reliability of fiber optic gyroscopes by improving the design of fiber optic transmission systems, optimizing the performance of light sources and detection systems, improving the accuracy of signal processing algorithms, and reducing the influence of temperature and vibration on the performance of fiber optic gyroscopes.
Additionally, researchers are working on develop new fiber optic gyroscope technology. For example, photonic crystal fiber gyroscopes use photonic crystal fibers with periodic refractive index changes, which can achieve higher sensitivity and lower noise levels. Micro-nano fiber gyroscope Using micro-nano processing technology to manufacture micro-sized fiber gyroscopes, which can achieve smaller volume and lower power consumption.
Gyroscope instrument was originally used for navigation, but with the development of science and technology, it has also been widely used in aviation and aerospace industry. Gyro instrument can not only be used as an indicator, but more importantly, it can be used as a sensitive element in the automatic control system, which can be used as a signal sensor.
All in all, fiber optic gyroscopes play an important role in scientific research and engineering applications. With the advancement of technology and the deepening of research, the accuracy and reliability of fiber optic gyroscopes will continue to improve, providing more efficient and reliable solutions for applications in various fields.
The development trend of fiber optic gyroscope
1.High precision.
Higher precision is an inevitable requirement for fiber optic gyro to replace laser gyro in high performance navigation. At present, the high precision fiber optic gyro technology is not fully mature.
2.High stability and anti-interference.
Long-term high stability is also one of the development directions of fiber optic gyroscope, which can maintain navigation accuracy for a long time under harsh environment is the requirement of inertial navigation system for gyroscope. For example, in the case of high temperature, strong earthquake, strong magnetic field, etc., the fiber optic gyroscope must also have sufficient accuracy to meet the requirements of customers.
3.Product diversification.
It is necessary to develop products with different precision and different needs. Different uses have different requirements for accuracy, and the structure of the fiber optic gyroscope is simple, changing the accuracy only needs to adjust the length and diameter of the coil. In this respect, it has the advantage of surpassing mechanical gyroscopes and laser gyroscopes, and its different precision products are easier to achieve.
4.Large-scale production.
Cost reduction is also one of the prerequisites for fiber optic gyro to be accepted by customers. The production scale of various components can effectively promote the reduction of production costs, especially for middle and low precision fiber optic gyroscopes.
At present, the representative product of Ericco, ER-FOG-851 (≤0.05 ~ 0.1º/h), ER-FOG-910 (0.02º/h), has the characteristics of small size, light weight, low power consumption, fast start, simple operation, convenient use, etc. Widely used in INS, IMU, positioning system, north finding system, platform stability and other fields.
In conclusion, the fiber optic gyroscope is already a relatively mature product, especially in the precision and price of the gyro market has a competitive advantage. Therefore, when a large amount of investment is required, low-cost fiber optic gyroscopes are a very good choice.
Hope this article can let you have a certain understanding of fiber optic gyroscope. If you are interested in fiber optic gyroscopes related products and articles, please read the related products and related articles below.
More Technical Questions
1. The Working Principle of FOG
2. Detailed Explanation of FOG Parameters
3. Specifications and Features of Fiber Optic Gyroscopes
4. Application of Fiber Optic Gyroscope
5. Principle and Application of Fiber Optic Gyroscope
6. Operation of a Fiber Optic Gyroscope
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