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Research on Attitude Control System and Simulation of a Certain Satellite

Author: XuFan
Tutor: MaGuangFu
School: Harbin Institute of Technology
Course: Navigation,Guidance and Control
Keywords: satellite attitude control attitude determination algorithm simulation software
CLC: V448.2
Type: Master's thesis
Year: 2006
Downloads: 845
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Abstract


The locomotion of satellite is usually divided into two parts, one is orbit movement, the other is attitude movement. Satellite attitude control researches the attitude movement. Satellite attitude control is divided into attitude determination, execution institution and design of attitude control low, the precision of attitude control is depended both on attitude determination and attitude control low. Under the background of a inertial directional satellite being developed, attitude determination and attitude control low have been studied in the thesis. The main contents are as follows:The attitude kinematics model of the inertia directional satellite is developed employing Euler-angle representations and quaternion representations. According to the low of angular momentum, the attitude dynamics model of rigid satellite is derived.Attitude estimation algorithm based on gyroscope and star tracker is designed using the extended Kalman Filter (EKF). Measure model of gyroscope and star tracker are established, the principle of EKF is introduced, and the attitude estimation algorithm of the inertia directional satellite is established by using gyroscope bias and error quaternion as state.Three attitude control low is designed after the research of attitude determination. First, linear dynamics model is developed and a PID controller is designed using Euler-angle feedback. Secondly, a quaternion feedback controller is designed employing Lyapunov method based on the nonlinear dynamics model, thirdly, a Euler-angle feedback controller is designed employing Lyapunov method based on the nonlinear dynamics model, too. The second and third controllers are proved to be asymptotically Stable. A simulation software of attitude determination and attitude control is designed in the environment of Matlab 6.5. Simulation result shows that these three controllers can satisfy the control aim.The last, according to the above research, satellite attitude control system simulation software is developed in the environment of Visual C++. The software is characterized by modularization, visualization and simple use. Simulation result of this software is good.

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Space instrument,spacecraft devices,spacecraft guidance and control > Guidance and Control > Spacecraft guidance and control
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