Decentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged Diesel engine

Abderrahim Lamara (1) , Guillaume Colin (2) , Patrick Lanusse (3) , Yann Chamaillard (2) , Alain Charlet (2)

1 F2ME
2 F2ME
3 IMS - Laboratoire de l'intégration, du matériau au système

The targeted purpose here is the control of a nonlinear and non-square system with three inputs and two outputs in order to reduce soot and greenhouse gas pollutants. In this paper, a non-square multivariable controller for the air-path system of a turbocharged Diesel engine is proposed. The controller is designed using the CRONE (Commande Robuste d'Ordre Non Entier) Control-System-Design approach to maintain performance and robust stability for a wide set of operating points. In this research, we focused on the multi-input multi-output system identification problem, and test-bench data were processed to find a nominal linear model. The controller was then designed via an open-loop transfer function optimization. Finally, simulation results from a simulation model show the performance of the proposed control-system.

Mots clés: Diesel engine air path; Robust control; CRONE; Multivariable control; Non-square system

Domaines: Automatique / Robotique

Abderrahim Lamara, Guillaume Colin, Patrick Lanusse, Yann Chamaillard, Alain Charlet. Decentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged Diesel engine. 2012 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling (ECOSM), Oct 2012, Rueil-Malmaison, France. ⟨hal-00767698⟩