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Djemili I.,School of Advanced Engineering Studies | Djemili I.,Automatic Control Laboratory Lagis | Wang H.P.,Nanjing University of Science and Technology | Aitouche A.,Lille University of Science and Technology | And 3 more authors.
2012 20th Mediterranean Conference on Control and Automation, MED 2012 - Conference Proceedings | Year: 2012

This paper focuses on the control of diesel HCCI engine air path. We propose a control strategy based on Recursive Model Free Controller (RMFC). This kind of controller is simple to design and it needs only the outputs of the system. On other hand, in order to estimate the state variables, an observer is used and its convergence is performed by using Lyapunov asymptotic stability and is formulated in the format of Linear Matrix Inequalities (LMI) to obtain observer gains. The proposed approach while possessing a simple structure proves a good performance in term of static state error with an accepted setting time. The proposed strategy has been successfully evaluated using a professional advanced diesel engine simulator AMEsim(LMS) platform in co-simulation with SIMULINK. © 2012 IEEE. Source

Boulkroune B.,School of Advanced Engineering Studies | Boulkroune B.,Automatic Control Laboratory Lagis | Aitouche A.,School of Advanced Engineering Studies | Aitouche A.,Automatic Control Laboratory Lagis | And 3 more authors.
Proceedings of the IEEE International Conference on Control Applications | Year: 2013

This work addresses the issues of actuator fault detection and isolation for diesel engines. We are particularly interested to diagnosis faults affecting the Exhaust Gas Recirculation (EGR) and the variable Nozzle Turbine (VNT) actuator valves. To accomplish this goal, a residual generator based on a nonlinear mean value model of the diesel engine is proposed using a bank of observer. Each residual on the proposed scheme is based on a nonlinear unknown input observer and designed to be insensitive to only one fault. By using this kind of scheme, the actuator faults can be easily isolated since only one residual goes to zero while the others do not. A decision algorithm based on multi-CUSUM is used. The performances of the proposed approach are shown through the application to a diesel engine model. © 2013 IEEE. Source

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