Adaptive Control Method Of Flexible Spacecraft With Reation Wheel Friction

As human exploration, development and utilization of space,The technology of space from the 1960 s to today it has been rapid development, on the other hand, development has faced a variety of complex issues, in which the spacecraft performed precise control is a key issue to maneuver spacecraft and successful completion of space missions. In practical engineering, the spacecraft receives reaction flywheel friction torque, flexible aircraft itself, interference rotational inertia of their own aircraft and other uncertain factors such as non-linear, making it difficult to precisely control becomes a problem. In this paper, the above situation, especially considering the spacecraft reaction flywheel friction work torque and moment of inertia under uncertainty, mainly studied the following aspects:Consider that a space vehicle with a flexible member as the target,consider the reaction flywheel with unknown friction disturbance at work.Construct the rate of adaptive control with the boundary conditions to finish the spacecraft attitude tracking completion of tasks, simulation the results sh ow the controller effectivelyConsider that a space vehicle with a flexible member as the target,consider the situation of uncertainty spacecraft inertia and uncertainty unknown reaction flywheel friction disturbance.Construct adaptive control rate to finish the spacecraft attitude tracking completion of tasks, simulation results show effectiveness equation.Consider that a space vehicle with a flexible member as the target,considering the spacecraft moment of inertia and uncertainty unknown Consider the uncertainty spacecraft inertia and uncertainty unknown reaction flywheel friction disturbance, from adaptive estimation, design flexible satellite backstepping control, complete attitude tracking tasks, the simulation results show the effectiveness of the co ntrol law.