scholarly journals ENSURING THE SURVIVABILITY OF SPACECRAFT CONTROL SYSTEM AT CRITICAL FAILURES OF REACTION WHEELS

2021 ◽  
Vol 23 (2) ◽  
pp. 66-74
Author(s):  
S.Ye. Somov ◽  
◽  
T.Ye. Somova ◽  
◽  
Keyword(s):  
Computer Simulation ◽  
Control System ◽  
Attitude Control ◽  
Spacecraft Attitude ◽  
Spacecraft Attitude Control ◽  
General Electric ◽  
Attitude Control System ◽  
Spacecraft Control ◽  
The Earth ◽  
Magnetic Drive

A method for ensuring the survivability of the spacecraft attitude control system with a minimally redundant cluster of flywheels by General Electric scheme and a magnetic drive in the event of the flywheels' failures is presented. The results of computer simulation were obtained and it was found that in case of failure of any two flywheels, the Earth survey satellite retains the ability to scanning observation given targets.

scholarly journals Fault Reconstruction Approach for Distributed Coordinated Spacecraft Attitude Control System

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Mingyi Huo ◽  
Yanning Guo ◽  
Xing Huo
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Large Scale ◽  
Sliding Mode ◽  
Reconstruction Error ◽  
Spacecraft Attitude ◽  
Alignment Error ◽  
Spacecraft Attitude Control ◽  
Attitude Control System ◽  
Fault Reconstruction

This work presents a novel fault reconstruction approach for a large-scale system, that is, a distributed coordinated spacecraft attitude control system. The attitude of all the spacecrafts in this distributed system is controlled by using thrusters. All possible faults of thruster including thrust magnitude error and alignment error are investigated. As a stepping stone, the mathematical model of thruster is firstly established based on the thruster configuration. On the basis of this, a sliding mode observer is then proposed to reconstruct faults in each agent of the coordinated control system. A Lyapunov-based analysis shows that the observer asymptotically converges to the actual faults. The key feature of this fault reconstruction approach is that it can achieve a faster reconstruction of the fault in comparison with the conventional fault reconstruction schemes. It can globally reconstruct thruster faults with zero reconstruction error, and this is accomplished within finite time. The effectiveness of the proposed approach is analytically authenticated via simulation study.

scholarly journals Hybrid spacecraft attitude control system

2007 ◽  
Vol 1 (2) ◽  
pp. 221-230 ◽  
Author(s):  
Renuganth Varatharajoo ◽  
Ramly Ajir ◽  
Tamizi Ahmad
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Spacecraft Attitude ◽  
Spacecraft Attitude Control ◽  
Attitude Control System

scholarly journals Design of a Pulse-Width-Modulation Spacecraft Attitude Control System Via Digital Redesign

1999 ◽  
Vol 32 (2) ◽  
pp. 8033-8038 ◽  
Author(s):  
Tohru Ieko ◽  
Yoshimasa Ochi ◽  
Kimio Kanai ◽  
Noriyuki Hori ◽  
Peter N. Nikiforuk
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Spacecraft Attitude ◽  
Spacecraft Attitude Control ◽  
Attitude Control System ◽  
Digital Redesign
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