Event-Triggered Adaptive Attitude Tracking Control for Spacecraft With Unknown Actuator Faults

2020 ◽  
Vol 67 (3) ◽  
pp. 2241-2250 ◽  
Author(s):  
Chenliang Wang ◽  
Lei Guo ◽  
Changyun Wen ◽  
Qinglei Hu ◽  
Jianzhong Qiao
Keyword(s):  
Tracking Control ◽  
Actuator Faults ◽  
Attitude Tracking ◽  
Attitude Tracking Control ◽  
Event Triggered

Adaptive fault-tolerant control for hybrid attitude tracking control system with quantized control torque and measurement

2020 ◽  
pp. 095441002095330
Author(s):  
Min Li ◽  
Yingchun Zhang ◽  
Yunhai Geng
Keyword(s):  
Control System ◽  
Tracking Control ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Actuator Faults ◽  
Control Torque ◽  
External Disturbances ◽  
Quantized Control ◽  
Attitude Tracking ◽  
Attitude Tracking Control

In this paper, the problem of fault tolerant control for spacecraft attitude tracking control system in the presence of actuator faults/failures, quantized control torque and measurement, uncertain inertial matrix and external disturbances is taken into account. The dynamical uniform quantizers are developed to quantize the signals of control torque and measurement, which can reduce the data transmission rate. In combination with the CA and FTC technique, a robust adaptive fault tolerant control scheme is proposed to cope with the effects of quantization errors in control torque and measurement, the unknown actuator faults/failures, uncertain inertial matrix and external disturbances. The developed control strategy combined with quantized control torque and measurement can guarantee the stability of overall closed-loop system and achieve satisfactory attitude tracking performance. Finally, simulation results are presented to verify the effectiveness of the proposed methods.

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