Today I will introduce you to inertial navigation, and the sensor is just a component in inertial navigation. Inertial navigation is now the most popular, the most used is the Strapdown inertial navigation, the strapdown inertial navigation system is for the miniaturization of flight control.
The purpose of navigation is to obtain parameters such as the attitude, position and speed of the drone in real time. The photoelectric encoder can be used to measure the angle of rotation of the drone. The speed motor can be used to measure the angular velocity of the drone. The speedometer can be used to measure the speed of the drone. However, the above various measuring methods cannot measure the drone independently. Line motion and angular motion, and inertial navigation can do this. Because the inertial navigation system does not require a physical reference, it is called a DOF system. In addition, inertial navigation does not receive natural and artificial interference from the outside of the device, making it particularly suitable for use in harsh environments.
After the 1990s, with the development of micro-electromechanical systems (MEMS) technology, inertial sensors have achieved small size, improved reliability, and are suitable for mass production. Since then, strap-down inertial navigation systems have entered the field of micro-electromechanics. And began to penetrate into the civilian field, appearing in the robot system and a new generation of vehicles. In the 21st century, the Strapdown Inertial Navigation System almost completely replaced the platform inertial navigation system.
In particular, strap-down piping systems are used in medium and low-precision applications such as airplanes and missiles. Lideng introduced the LTN-92 laser strapdown inertial navigation system ten years ago as a replacement for the flexible gyro platform inertial navigation LTN-72. Boeing and Airbus civil aircraft are almost equipped with LTN-92 laser. Inertial navigation system.
The most important feature of the Strapdown Piping System is the establishment of a navigation coordinate system based on short hair, that is, the platform coordinate system exists in the form of a mathematical platform, which omits a complicated physical physical platform, which is simple in structure, small in size, light in weight, low in cost, and easy to maintain. High reliability, and can improve the fault tolerance of the system through redundancy technology.
But these benefits are traded in complex algorithmic designs and heavy computational loads. Attitude update solving is the key algorithm of strapdown inertial navigation. The traditional attitude updating algorithms include Euler angle method, direction cosine method and quaternion method. The quaternion pickup algorithm is simple and computationally small, so it is often used in engineering practice.
Power Supply Board,Power Adapter Circuit Board,USB Circuit Board Kit,Powers And Circuit Board Parts
Dongguan baiyou electronic co.,ltd , https://www.dgbaiyou.com