The rapid growth of space utilization requires extensive construction, and maintenance of space structures and satellites in orbit. &#10This will, in turn, substantiate application of robotic systems in space. In this paper, a near-minimum-time optimal control law is developed for a rigid space platform with flexible links during an orientating maneuver with large angle of rotation. The time op...

This paper treats the problem of nonlinear adaptive attitude tracking control of an orbiting flexible spacecraft. It is assumed that the system parameters are unknown and the truncated model of the spacecraft has finite but arbitrary dimension. An adaptive sliding mode control law is derived for a threeaxis stabilized spacecraft attitude tracking control system. The control gains are designed b...

A procedure for obtaining robust time-optimal command profiles for multi-mode flexible spacecraft is presented. The command profiles are required to move a spacecraft from rest-to-rest with zero residual vibration. Furthermore, the commands are subject to a robustness constraint in an attempt to keep the residual vibration at a low level in the presence of modeling errors. The robustness constr...

Abstract This paper focuses on the attitude control problems of spacecraft with external interference and platform actuator failure. The Lagrange method is used to establish dynamic models complex composed rotating appendages platform, quaternion describe kinematics. Second, a fault-tolerant algorithm that combined adaptive fuzzy finite time sliding mode proposed for fixed-time schemes are part...

This paper proposed an integrated optimal control strategy for a servicing spacecraft in proximity operations on a target in space. The relative position vector between the servicing spacecraft and the target is required to direct towards the docking port of the target while the attitude of the two bodies must be synchronized without exciting large flexible vibrations. The control of translatio...