Study and comparison of non linear and LPV control approaches for vehicle stability control

Abstract : This paper proposes a study and a comparison between two efficient and novel vehicle control dynamics strategies, namely, the non linear Flatness control strategy and the LPV/Hinf control strategy. The first one concerns a controller based on the differential algebraic flatness of non linear systems and an algebraic non linear estimation applied to commercial vehicles. The second one is a LPV/Hinf (Linear Varying Parameter with the Hinf norm ) control using a stability monitoring system to achieve the vehicle dynamics control objective. These two strategies use Active Steering and Electro- Mechanical Braking actuators and aim at improving the vehicle stability and steerability by designing a multivariable controller that acts simultaneously on the lateral and longitudinal dynam- ics of the car. Simulations are performed on a complex nonlinear full vehicle model, the same driving scenario is applied for the two control strategies. The model parameters are those of a Renault Mégane Coupé (see table.I), obtained by identification with real data. Promising simulations results are obtained. Comparison between the two proposed strategies and the uncontrolled vehicle show the reliability and the robustness of the proposed solutions, even if one is governed within the linear control framework while the other one is a non linear control approach.
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Soheib Fergani, Lghani Menhour, Olivier Sename, Luc Dugard, Brigitte d'Andréa-Novel. Study and comparison of non linear and LPV control approaches for vehicle stability control. 21st Mediterranean Conference on Control and Automation (MED'13), Jun 2013, Platanias-Chania, Crete, Greece. ⟨hal-00868229⟩

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