Attitude Analysis and Robust Adaptive Backstepping Sliding Mode Control of Spacecrafts Orbiting Irregular Asteroids

• Published in: Mathematical problems in engineering Vol. 2014; no. 2014; pp. 1 - 15
• Main Authors: Liang, Chunhui, Li, Yuanchun
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Puplishing Corporation 01.01.2014; Hindawi Publishing Corporation; Hindawi Limited
• Subjects: Adaptive algorithms; Adaptive control; Adaptive control systems; Adaptive systems; Aerospace engineering; Asteroids; Attitude stability; Control algorithms; Control stability; Control theory; Coordinate transformations; Design; Disturbances; Gravitational fields; Laws; Mathematical models; Mathematical problems; Nonlinear control; Numerical models; Orbital stability; Orbits; Retrograde orbits; Robust control; Sliding mode control; Solar system; Space exploration; Spacecraft; Spacecraft performance; Spacecraft stability; Stability analysis; Studies; Uncertainty; Uncertainty analysis
• ISSN: 1024-123X; 1563-5147
• DOI: 10.1155/2014/367163

Attitude stability analysis and robust control algorithms for spacecrafts orbiting irregular asteroids are investigated in the presence of model uncertainties and external disturbances. Rigid spacecraft nonlinear attitude models are considered and detailed attitude stability analysis of spacecraft subjected to the gravity gradient torque in an irregular central gravity field is included in retrograde orbits and direct orbits using linearized system model. The robust adaptive backstepping sliding mode control laws are designed to make the attitude of the spacecrafts stabilized and responded accurately to the expectation in the presence of disturbances and parametric uncertainties. Numerical simulations are included to illustrate the spacecraft performance obtained using the proposed control laws.