UAV flight control solution

Single chip microcomputer STM32L151CCU6

L0504-Murata muRata common mode inductor 90Ω 150mA

I. Overview

With the development of science and technology and the transformation of military strategic thinking, drones have become more and more widely used in military and civilian fields, such as aviation measurement, aerial photography, reconnaissance, and forest fire prevention. In order to solve the problem of high precision and miniaturization that plague the development of China's UAVs, our company has finally overcome the difficulties after several years of research and developed a set of UAV flight control systems with independent intellectual property rights in China. High precision requires that the guidance control of the drone is highly accurate and can adapt to complex external environments. Miniaturization puts higher demands on the weight and volume of the control system, requiring that the smaller the control component, the better.

Second, the composition

1. Embedded computer system

2, GPS receiver module

3. IMU

4, the interface

Third, the characteristics

? Attitude and speed control. Stance stabilization and speed control are used under normal conditions, and speed stability and attitude control are used in the case of large interference, which greatly increases flight safety.

• Remote control handle, waypoint and terrain matching guidance are implemented. An inner loop control command can be generated by the outer loop.

? GPS/INS Strapdown Integrated Navigation with Extended Kalman (EKF) filtering

• Adaptability to changes in flight loads, center of gravity, etc., greatly improves flight accuracy and flight safety.

• 3M data logging space. (maximum expandable to 1G)

• Navigation algorithms are highly adaptable to vibration and other disturbances. Satisfactory navigation data is obtained even under severe vibration conditions.

? Use VxWorks or uCOS operating system, real-time strong, high reliability, easy to cut, easy to transplant on different hardware platforms. Low dependence on hardware.

Fourth, the software interface