H ∞ Feedback Control for Switched Linear Systems: Application to an Engine Air Path System

Caroline Ngo (1) , Damien Koenig (1) , Olivier Sename (1) , H Béchart (2)

1 GIPSA-SLR - GIPSA - Systèmes linéaires et robustesse
2 CT Lardy - Renault Centre Technique Lardy

This paper presents the results of an engine air-path Hinf state feedback switched linear controller. The main advantage of this approach is that controller gains are calculated offine, with the robust specifications allowing fast calculation and is cost-effective in calculationand resources. The air-path system dynamics are governed by the Saint-Venant equations, diffcult to handle in control synthesis due to its nonlinear properties (states - control inputs coupling, nonlinear functions). To employ advanced control techniques, a switched linear state space representationis proposed. The model is simplified considering that slow dynamics are quite constant. The proposed approach provides a robust state feedback control toward perturbations (model error, unmodeled dynamics...) by considering these disturbances as unknown inputs.

Domaines: Automatique / Robotique

Caroline Ngo, Damien Koenig, Olivier Sename, H Béchart. H ∞ Feedback Control for Switched Linear Systems: Application to an Engine Air Path System. IFAC WC 2014 - 19th IFAC World Congress, Aug 2014, Le Cap, South Africa. ⟨hal-01084851⟩