Quaternion-based finite time control for spacecraft attitude tracking

2011 ◽  
Vol 69 (1-2) ◽  
pp. 48-58 ◽  
Author(s):  
Shunan Wu ◽  
Gianmarco Radice ◽  
Yongsheng Gao ◽  
Zhaowei Sun
Keyword(s):  
Finite Time ◽  
Spacecraft Attitude ◽  
Time Control ◽  
Attitude Tracking

scholarly journals Finite-Time Second-Order Sliding Mode Controllers for Spacecraft Attitude Tracking

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Chutiphon Pukdeboon
Keyword(s):  
Finite Time ◽  
Sliding Mode ◽  
Second Order ◽  
Disturbance Attenuation ◽  
Spacecraft Attitude ◽  
Control Laws ◽  
Attitude Tracking ◽  
Twisting Control ◽  
Super Twisting Control ◽  
Second Order Sliding Mode

The attitude tracking control problem of a spacecraft nonlinear system with external disturbances and inertia uncertainties is studied. Two robust attitude tracking controllers based on finite-time second-order sliding mode control schemes are proposed to solve this problem. For the first controller, smooth super twisting control is applied to quaternion-based spacecraft-attitude-tracking maneuvers. The second controller is developed by adding linear correction terms to the first super twisting control algorithm in order to improve the dynamic performance of the closed-loop system. Both controllers are continuous and, therefore, chattering free. The concepts of a strong Lyapunov function are employed to ensure a finite-time convergence property of the proposed controllers. Theoretical analysis shows that the resulting control laws have strong robustness and disturbance attenuation ability. Numerical simulations are also given to demonstrate the performance of the proposed control laws.

Finite-Time Disturbance Observer Design and Attitude Tracking Control of a Rigid Spacecraft

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
Qixun Lan ◽  
Chunjiang Qian ◽  
Shihua Li
Keyword(s):  
Finite Time ◽  
Disturbance Observer ◽  
Observer Design ◽  
Design Approach ◽  
Control Approach ◽  
Time Control ◽  
Time Simulation ◽  
Attitude Tracking ◽  
Rigid Spacecraft ◽  
Attitude Tracking Control

This paper considers the problem of finite-time disturbance observer (FTDO) design and the problem of FTDO based finite-time control for systems subject to nonvanishing disturbances. First of all, based on the homogeneous systems theory and saturation technique, a continuous FTDO design approach is proposed. Then, by using the proposed FTDO design approach, a FTDO is constructed to estimate the disturbances that exist in a rigid spacecraft system. Furthermore, based on a baseline finite-time control law and a feedforward compensation term produced by the FTDO, a composite controller is constructed for the rigid spacecraft system. It is shown that the proposed composite controller will render the rigid spacecraft track the desired attitude trajectory in a finite-time. Simulation results are included to demonstrate the effectiveness of the proposed control approach.

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