Adaptive fuzzy backstepping control for attitude stabilization of flexible spacecraft with signal quantization and actuator faults  

作　　者：Qiuhong LIU Ming LIU Guangren DUAN 

机构地区：[1]Research Institute of Intelligent Control Systems,Harbin Institute of Technology,Harbin 150001,China [2]Research Center of Satellite Technology,Harbin Institute of Technology,Harbin 150001,China [3]Center for Control Theory and Guidance Technology,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Science China(Information Sciences)》2021年第5期131-146,共16页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant Nos.61833009,61473096,61690212,91438202,61690210,61333003,61673133);National Key Research and Development Plan(Grant No.2016YFB0500901);Heilongjiang Touyan Team。

摘　　要：In this study,the fault-tolerant attitude control of flexible spacecraft is investigated over digital communication channels,where a uniform quantizer is considered with respect to the sensor signals and controller indexes.Further,an adaptive fuzzy backstepping control strategy has been developed for the considered attitude stabilization issue,where the adaptive fuzzy logic method is used to approximate the rigid-flexible coupled nonlinearity of the spacecraft.In this design,the online adjusting quantizer parameters are injected into the controller gains to simultaneously compensate for the quantization errors and timevarying actuator faults.In the proposed control method,the attitude stabilization task is achieved in the presence of external disturbances,time-varying actuator faults,and signal quantization.Finally,the practical examples are compared to demonstrate the effectiveness of the proposed control strategy.

关 键 词：fault-tolerant control attitude stabilization signal quantization adaptive fuzzy control backstepping control 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] V448.2[自动化与计算机技术—控制科学与工程]