Attitude Control of Spacecraft with Reaction Wheels under Unknown Inertia Matrix

In this paper, the problem of attitude control of spacecraft with the unknown inertia matrix is studied. The model of kinetics in which the reaction wheels as executive component of spacecraft attitude control is considered. Based on the Lyapunov stability theory, the law of controller and estimation values of inertia matrix is obtained. Numerical simulation results show the validity and effectiveness of this method. To demonstrate the robustness against the effective of bounded noise of the proposed technique, it is applied to the model system and simulation results are obtained.