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A robust adaptive controller is presented for the control system of inter-satellite linkage (ISL) antenna acquisition and tracking, which faces with the uncertainties of un-modeled dynamics and unbounded disturbance and the control input constraints. The stability is proved by using Lyapunov stabilization theory. The simulation results show that the robust adaptive controller can satisfy all the design...
Simulation is an important step during the design of control systems. Based on the series tools of MATLAB\Simulink\xPC, the real-time simulation environment is constructed. By adopting the mixed modeling measures that comprise Simulink, Stateflow and S-function, models for satellite attitude dynamics, all sensors and actuators, control logics of the antenna and etc are all built successfully, then...
While adopting an elevation-over-azimuth architecture by an inter-satellite linkage antenna of a user satellite, a zenith pass problem always occurs when the antenna is tracing the tracking and data relay satellite (TDRS). This paper deals with this problem by way of, firstly, introducing movement laws of the inter-satellite linkage to predict the movement of the user satellite antenna followed by...
This paper considers the control of entire-formation maneuvering in low-thrust Earth-orbiting spacecraft formation flying (SFF). A coordinated control scheme based on the leader-follower approach is developed to achieve formation maneuvers while keeping the internal formation intact. To implement the control scheme, a low-level sliding mode control (SMC) based on nonlinear dynamics is provided. Using...
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