Title :
Stabilization control of the tethered satellite system using nonlinear model predictive control
Author :
Liu Gang ; Li Chuanjiang ; Ma Guangfu ; Huang Jing
Author_Institution :
Harbin Inst. of Technol., Harbin, China
Abstract :
The tethered satellite system (TSS) has some potential applications in space interferometry and remote sensing. It is advantageous to traditional free satellite formations as far as relative station-keeping is concerned. However, the dynamics of the TSS in the restricted three-body problem is extraordinary complicated, and the collinear equilibrium points are unstable. To stabilize and keep the TSS in the vicinity of the collinear libration points, the tube nonlinear model predictive control (NMPC) scheme is employed. The terms related to the influence of the tether in the dynamic model of the TSS are viewed as additive disturbances. The robustness of the controller is guaranteed by the tightened constraints of the reference trajectory. Simulation results demonstrate the effectiveness of the proposed control strategy.
Keywords :
artificial satellites; nonlinear control systems; predictive control; robust control; space tethers; trajectory control; NMPC scheme; TSS; TSS dynamics; additive disturbances; collinear libration points; controller robustness; free satellite formations; nonlinear model predictive control; remote sensing; space interferometry; stabilization control; tethered satellite system; three-body problem; tube nonlinear model predictive control scheme; Equations; Mathematical model; Nonlinear dynamical systems; Optimal control; Predictive control; Satellites; Trajectory; Libration point; Nonlinear model predictive control; Restricted three-body problem; Tethered satellite system;
Conference_Titel :
Control Conference (CCC), 2014 33rd Chinese
Conference_Location :
Nanjing
DOI :
10.1109/ChiCC.2014.6896280
