Based On Independent And Stable Triaxial Carrier-based Control System Of Satellite Communication System Design And Realization

Having a broad maritime area makes China become a large shipping country. With the development of China's ship-building industry, the demand for satellite communication system on shipboard in the domestic market is becoming increasingly prominent. By the restrain of technology and price, the "mobile communication" products have not yet been widely used inland. In response to this situation, a three-axis stability control system based on the satellite communication system on the shipboard is designed in this paper.First, the overall program and technical indicators are proposed. The communication system is for Ku-band satellite, what is divided into three parts:the satellite signal processing, stabilized tracking and the antenna. The system takes brushless DC torque motor as its actuators, and GPS, AHRS, beacon system as its sensors.The hardware system is designed as modules, which uses TMS320F2812 as its core, and the circuits of the power module, the core module, the sensor module and the motor drive module are finished. Then, the attitude of the three-axis stabilized tracking system is solved in space, and the dynamic process and principles of the system is detailed analyzed. And the mathematical model of the motor control system is established. In order to effectively overcome the parametric uncertainties, unmodeled dynamics, disturbances, and other complex non-linear factors, an Adaptive Robust Controller is designed. Theoretical analysis shows that the controller can overcome the uncertainty of the system to reach the required tracking accuracy by adjusting the controller parameters. And the effectiveness of the controller is verified through simulation.Then, using the modular thoughts, the software system is designed. The programming and debugging of sensor data decoding, system initialization and the stable tracking is complete.Finally, the software and the hardware system is joint debugged, and the results are analyzed. The experimental results show that the system achieved the desired index requirements.