This paper is devoted to the modelling of a Diesel Common Rail Injection System. The objective is twofold : to build a simulator which will be used later for the rail pressure control scheme validation, and to get linearized models for control design. A mathematical model, based on physical equations is developed and used as a simulator. Then time responses of the rail pressure of a real engine and of the simulator are compared in order to check the accuracy of the model. A frequency domain approach is finally proposed to validate linearized control-oriented models.
Résumé -Une approche LFT pour la commande H ∞ des systèmes d'injection "Common rail'' des moteurs Diesel -Dans cet article, une approche LFT est proposée pour concevoir un contrôleur H ∞ LPV à temps-discret incluant une compensation anti-saturation. Cette méthodologie est appliquée au système d'injection "Common Rail" des moteurs Diesel à injection directe. L'efficacité de ce contrôleur est mise en avant en le comparant à l'aide de simulations avec un régulateur de type PID à gain séquencé embarqué sur véhicule.
Abstract -An LFT Approach to H ∞ Control Design for Diesel Engine Common Rail Injection System -In this paper, a linear fractional transformation (LFT) approach is proposed in order to design a linear parameter-varying discrete-time H
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