Open AccessT‐S modelling‐based anti‐disturbance finite‐time control with input saturation
Author(s) -
Shao Li Ren,
Yi Yang,
Niu Cheng Bo,
Liu Bei
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9396
Subject(s) - control theory (sociology) , disturbance (geology) , computer science , observer (physics) , controller (irrigation) , lyapunov function , mimo , saturation (graph theory) , fuzzy logic , control (management) , control engineering , mathematics , nonlinear system , engineering , channel (broadcasting) , physics , artificial intelligence , agronomy , biology , combinatorics , paleontology , computer network , quantum mechanics
Here, the problem of finite‐time disturbance rejection is investigated for a class of MIMO non‐linear systems with both unknown external disturbances and actuator saturation in the disturbance‐observer‐based control (DOBC) framework. In order to expand the application range of external disturbances, Takagi‐Sugeno (T‐S) fuzzy model is used to describe the complex non‐linear disturbance. By constructing an appropriate Lyapunov function, an observer‐based controller is designed to guarantee that the closed‐loop system is finite‐time stable. Finally, a simulation example for A4D flight control systems with non‐linear disturbances is given to demonstrate the effectiveness of the proposed approach.