NDLI: Adaptive output feedback fault-tolerant control for MIMO non-affine non-linear systems based on disturbance observer

Content Provider	IET Digital Library
Author	Ma, Zhiyao Tong, Shaocheng Li, Yongming
Abstract	In this study, the fault-tolerant control problem is investigated for a class of non-affine output-constrained multi-input multiple-output non-linear systems with actuator faults. The controlled systems contain unknown non-linear functions, unknown external disturbance and immeasurable states. The fuzzy logic systems and a robust compensation function are employed to deal with the unknown non-linear functions and non-affine non-linear actuator fault problems. Then, the state observer and the non-linear disturbance observer are developed for estimating the immeasurable states and unknown compounded disturbance, respectively. By using the barrier Lyapunov function method and in the unified framework of adaptive backstepping output feedback control design, a novel adaptive fuzzy fault-tolerant controller design scheme is developed. It is shown that all the variables of the closed-loop system are semi-globally uniformly bounded. Moreover, the system outputs cannot violate their predefined bounds in the presence of the non-affine non-linear faults. A simulation is given to validate the effectiveness of the proposed approach.
Starting Page	2422
Ending Page	2436
Page Count	15
ISSN	17518644
Volume Number	10
e-ISSN	17518652
Issue Number	Issue 18, Dec (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/10/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2016.0612
Journal	IET Control Theory & Applications
Publisher Date	2016-08-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Actuator Fault Adaptive Backstepping Output Feedback Control Design Adaptive Control Adaptive Fuzzy Fault-tolerant Controller Design Adaptive Output Feedback Fault-tolerant Control Algebra Barrier Lyapunov Function Closed Loop System Closed-loop System Compensation Control Nonlinearities Control System Analysis Control System Synthesis Fault Tolerant Control Feedback Formal Logic Fuzzy Control Fuzzy Logic Fuzzy Logic System Fuzzy System Lyapunov Method MIMO Nonaffine Nonlinear System MIMO System Modelling And Identification Multivariable Control System Nonaffine Nonlinear Fault Nonaffine Output-constrained Multiinput Multiple-output Nonlinear System Nonlinear Control System Nonlinear Disturbance Observer Nonlinear Function Observers Robust Compensation Function Robust Control Self Adjusting Control System Semiglobally Uniformly Bounded Simulation Stability in Control Theory State Observer Synthesis Method Unknown Compounded Disturbance Unknown External Disturbance Unknown Nonlinear Function
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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