A case study towards the application of NMPC to a con- tinuously variable semi-active suspension
نویسنده
چکیده
This paper presents a simulation-based study of the performance achievable by a continuously variable electro-hydraulic semi-active suspension system. By applying state-of-the-art dynamic optimization techniques, a direct optimal controller is developed for a nonlinear quarter car model that includes an identified semi-physical damper model. The direct optimal control approach offers an intuitive framework to take the constraints and the nonlinear dynamics of the suspension system into account. The performance of the designed direct optimal controller is compared to those obtained using a clipped optimal and a clipped optimal preview controller. The direct optimal control reveals an improved performance with respect to the clipped optimal approaches. The handling characteristic benefits the most from the included road preview and the accurate representation of the nonlinear system dynamics.
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