Finite‐time adaptive fault‐tolerant control for rigid spacecraft attitude tracking

2020 ◽  
Author(s):  
Shihong Gao ◽  
Yuanwei Jing ◽  
Xiaoping Liu ◽  
Georgi M. Dimirovski
Keyword(s):  
Finite Time ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Spacecraft Attitude ◽  
Attitude Tracking ◽  
Rigid Spacecraft

Disturbance observer-based fault-tolerant attitude tracking control for rigid spacecraft with finite-time convergence

2017 ◽  
Vol 233 (2) ◽  
pp. 616-628 ◽  
Author(s):  
Qun Zong ◽  
Xiuyun Zhang ◽  
Shikai Shao ◽  
Bailing Tian ◽  
Wenjing Liu
Keyword(s):  
Finite Time ◽  
Tracking Control ◽  
Disturbance Observer ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Terminal Sliding Mode ◽  
Nonsingular Terminal Sliding Mode ◽  
Attitude Tracking ◽  
Rigid Spacecraft ◽  
Attitude Tracking Control

In this paper, finite-time fault-tolerant attitude tracking control is investigated for rigid spacecraft system with external disturbances, inertia uncertainties and actuator faults. A novel finite-time disturbance observer combined with a nonsingular terminal sliding mode controller is developed. Using an equivalent output error injection approach, a finite-time disturbance observer with simple structure is firstly designed to estimate lumped uncertainty. Then, to remove the requirement of prior knowledge about lumped uncertainty and reduce chattering, an adaptive finite-time disturbance observer is further proposed, and the estimations converge to the neighborhood of the true values. Based on the designed observer, a unified finite-time attitude controller is obtained automatically. Finally, both additive and multiplicative faults are considered for simulations and the results illustrate the great fault-tolerant capability of the proposed scheme.

Finite-Time Fault Estimation and Fault-Tolerant Control for Rigid Spacecraft

2018 ◽  
Vol 31 (6) ◽  
pp. 04018091 ◽  
Author(s):  
Xiu-yun Zhang ◽  
Qun Zong ◽  
Bai-ling Tian ◽  
Shi-kai Shao ◽  
Wen-jing Liu
Keyword(s):  
Finite Time ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Fault Estimation ◽  
Rigid Spacecraft
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