NDLI: Saturated fault tolerant control based on partially decoupled unknown-input observer: a new integrated design strategy

Content Provider	IET Digital Library
Author	Hashemi, Mojtaba Egoli, Ali Kamali Naraghi, Mahyar Tan, Chee Pin
Abstract	This study presents a fault tolerant control (FTC) scheme based on fault estimation (FE) for a system subject to input saturation, uncertainty, L 2 -bounded disturbance and additive faults. In this study, the saturation is represented in polytopic form, and the disturbance is partitioned into matched and unmatched parts. For the FE scheme, a partially-decoupled unknown input observer is introduced to completely compensate for the matched part and only the unmatched part affects the FE performance. The FE and FTC schemes are integrated to ensure that the resulting closed-loop system is stable with L 2 -gain performance. Furthermore, all sufficient conditions for robust performance are derived and cast as linear matrix inequalities (LMIs). Usage of the Young relation removes equality constraints, and thus all LMIs are solvable in a single step. Numerical simulations are provided to verify the effectiveness of the proposed scheme.
Starting Page	2104
Ending Page	2113
Page Count	10
ISSN	17518644
Volume Number	13
e-ISSN	17518652
Issue Number	Issue 13, Sep (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/13/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2018.6349
Journal	IET Control Theory & Applications
Publisher Date	2019-06-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Additive Fault Algebra Closed Loop System Closed-loop System Control Nonlinearities Control System Analysis Control System Synthesis Fault Estimation Fault Tolerant Control FE Scheme FTC Scheme Input Saturation Integrated Design Strategy L2-bounded Disturbance L2-gain Performance Linear Matrix Inequalities Linear Matrix Inequality LMI Modelling And Identification Nonlinear Control System Numerical Simulation Observers Partially-decoupled Unknown-input Observer Polytopic Form Robust Control Robust Performance Simulation Stability in Control Theory Synthesis Method
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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