Open AccessGeneralized proportional integral disturbance observer-based fuzzy sliding mode control for active magnetic bearing system
Author(s) -
Van Nam Giap,
ShyhChour Huang
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1113/1/012006
Subject(s) - control theory (sociology) , overshoot (microwave communication) , fuzzy logic , state observer , integral sliding mode , controller (irrigation) , settling time , mathematics , sliding mode control , magnetic bearing , observer (physics) , fuzzy control system , computer science , engineering , control engineering , step response , physics , nonlinear system , control (management) , mechanical engineering , telecommunications , quantum mechanics , artificial intelligence , magnet , agronomy , biology
This paper presents a generalized proportional integral disturbance observer-based a combination of a fuzzy logic control and sliding mode control for the suspension active magnetic bearing system. Firstly, a generalized disturbance observer based on proportional and integral is built to estimate the parameters variation and the outside disturbances. In order to guarantee the system-state will be stabilized on pre-defined states, a disturbance feedback is constructed with a low pass filter. Subsequently, the proportional integral derivative surface sliding mode control is designed. Finally, the Fuzzy logic controller is constructed to determine the hitting controller gain. The stability analysis is given following the Lyapunov law. The proposed control structure can guarantee the system transient response quite good, no overshoot value, and settling time is quite narrow. Two testing cases of the proposed controller with and without the generalized disturbance observe is compared.