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所属单位：自动化学院
发表刊物：IEEE ACCESS
关键字：Multi-sensor faults sliding mode control backstepping hypersonic flight vehicle fault diagnosis fault tolerance
摘要：This paper presents a nonlinear fault-tolerant control (FTC) and sensor fault diagnosis for longitudinal dynamics of hypersonic flight vehicle. A nominal sliding mode control is developed to track the reference command of velocity and altitude on the basis of an affine nonlinear dynamic model. A nonlinear adaptive observer is proposed to estimate the fault in velocity system. The fault in altitude system is estimated using the coupling item as an estimation item through a backstepping sliding-mode observer to achieve an estimation performance better than that of the original adaptive observer. The estimation results are used to design a nonlinear FTC to compensate the multi-sensor faults. The stability of the controller is analyzed through Lyapunov theory. Numerical simulation results demonstrate the validity and robustness of the proposed controller and observer.
ISSN号：2169-3536
是否译文：否
发表时间：2018-01-01
合写作者：Niu, Juan,Jiang, Gengqian
通讯作者：陈复扬