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Fuzzy Sliding Mode Control for Active Suspension System with Proportional Differential Sliding Mode Observer
Author(s) -
Lin Bin,
Su Xiaoyu,
Li Xiaohang
Publication year - 2019
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.1882
Subject(s) - control theory (sociology) , observer (physics) , sliding mode control , state observer , active suspension , controller (irrigation) , nonlinear system , fuzzy logic , fuzzy control system , suspension (topology) , mode (computer interface) , engineering , differential (mechanical device) , vibration , mathematics , computer science , control (management) , physics , artificial intelligence , agronomy , quantum mechanics , homotopy , aerospace engineering , pure mathematics , electrical engineering , actuator , biology , operating system
In this paper, a generalized augmented transformation is considered for the quarter active suspension system with uncertainties. Specifically, the model uncertainties are converted to the augmented states and a new proportion differential sliding mode observer is used to estimate state variables and model uncertainties. A differential geometric method is applied to linearize the nonlinear suspension model. In order to weaken the vibration effect of sliding mode control force and reduce energy consumption, a fuzzy sliding mode controller is designed for the active suspension system and the fuzzy controller is applied to adjust switching control gain according to the reaching condition of sliding mode surface. The simulations are conducted to illustrate the effectiveness and advantages of this proposed observer and control strategy.