Abstract
This paper presents a novel controller design for half-car magneto-rheological (MR) suspension systems. By introducing a piecewise approximation model, the nonlinear constraints of MR dampers are transformed into piecewise constant constraints. Further, by defining a piecewise affine control law, the attenuation of pitch and heave responses are realized by satisfying a given H∞ index. The control gains are derived through linear-matrix-inequality (LMI) optimization. Simulations under random and impact roads have verified the effectiveness of proposed controller on performance improvement and constraint satisfaction.
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