Abstract
In this paper, Hinfin fuzzy controller design based on fuzzy observer for active vehicle suspension is studied. After giving the nonlinear model of the active suspension, its representation by a T-S uncertain fuzzy model is discussed. The control strategy uses the Hinfin controller based on observer to estimate state with reject road disturbance. The closed loop stability conditions of the vehicle with the fuzzy controller and the observer are parameterized in terms of linear matrix inequalities (LMI) problem which can be solved very efficiently using convex optimization techniques. Simulations of nonlinear vehicle active suspension with two degrees of freedom are given to illustrate the result.
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