Study on simulation of launch vehicle attitude control system

The launch vehicle attitude control system is the most important subsystem to ensure launch vehicle flying with the scheduled orbits. The output of attitude control system, which is the swaying angle of the servo mechanisms, drives the engine swaying. The swaying angle of engine directly enforces the corresponding changes of the attitude of launch vehicle. To simulate this process, the Matlab/Simulink tool is used in this paper. Firstly, models for each unit of the whole attitude control system are established according to the structure of the system and these separated models are integrated in Matlab/Simulink environment, and the model of attitude control system is obtained. Then, after inputting the real measured data, the simulation result is gotten. The results show: the method of modeling is accurate; the results tally with real measured data.