Adaptive Fault-Tolerant Attitude-Tracking Control of Spacecraft With Quantized Control Torque

In this article, the problem of fault-tolerant attitude-tracking control of spacecraft with quantized control torque is addressed. Actuator faults/failures, an uncertain inertia matrix and unknown disturbances are considered in the attitude controller design of the spacecraft. A dynamical quantizati...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.226653-226661
Main Authors: Yuan, Zhi, Wu, Lina, Yao, Xiuming
Format: Article
Language:English
Subjects:
Actuators
Adaptive control
Attitude control
Attitude-tracking
Control systems design
Data transmission
Disturbances
Fault tolerance
Fault tolerant systems
fault-tolerant control (FTC)
Feedback control
Inertia
Measurement
Quantization (signal)
signal quantization
Sliding mode control
Space vehicles
Spacecraft attitude control
Spacecraft tracking
Torque
Tracking control
Transmission rate (communications)
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Summary:In this article, the problem of fault-tolerant attitude-tracking control of spacecraft with quantized control torque is addressed. Actuator faults/failures, an uncertain inertia matrix and unknown disturbances are considered in the attitude controller design of the spacecraft. A dynamical quantization strategy is developed to quantize the signals of the control torque, which can reduce the data transmission rate. An adaptive fault-tolerant controller based on sliding mode techniques is constructed to address the impacts of the actuator faults/failures, quantization errors, inertia matrix uncertainties and unknown disturbances. The developed control strategy with a quantizer can ensure that the entire closed-loop system is asymptotically convergent and achieves satisfactory attitude-tracking performance. Finally, simulation results are provided to show the effectiveness of the proposed method.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3045017