Designing Active Fault- tolerant Controller for Spacecraft under Actuator Fault

Moradi, Rouzbeh

doi:10.22034/jssta.2022.305782.1032

Document Type : selected article

Author

Rouzbeh Moradi

Faculty of Aerospace Engineering - Urmia University of Technology

https://doi.org/10.22034/jssta.2022.305782.1032

Abstract

Fault- tolerant control is one of the important issues in automatic control. The reason for this importance is the probability of fault/ failure occurrence in controlling subsystems (sensor-actuator-system). Direct access to spacecraft is not always possible, Therefore fault- tolerant control has become even more important in space systems. On the other hand, due to the necessity for weight reduction in these systems, employing hardware redundancy has limitations. So, analytical redundancy has gained much attention in such systems. In this paper, reference inputs are corrected based an open- loop control command adjustment. Using simulation shown, without reference input adjustment, the controller will not be able to satisfy mission requirements when actuator faults occur. Then, the proposed method is used and the desired requirements are satisfied. The advantage of the proposed method is that, there is no need for taking the first and second derivatives of the reference inputs and these inputs can be obtained through integration.. This will prevent computational problems associated with differentiation.

Keywords

20.1001.1.27834557.1400.1.2.3.8

Main Subjects

control

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Space Science, Technology and Applications

Designing Active Fault- tolerant Controller for Spacecraft under Actuator Fault

References

References

Volume 1, Issue 2 - Serial Number 2
March 2022
Pages 22-33

Designing Active Fault- tolerant Controller for Spacecraft under Actuator Fault

References

References

Volume 1, Issue 2 - Serial Number 2March 2022Pages 22-33

Volume 1, Issue 2 - Serial Number 2
March 2022
Pages 22-33