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Naval Academy, Tunisia

Dallagi H.,Automatique et Robotique Marine ARM | Sabri B.,Automatique et Robotique Marine ARM
Lecture Notes in Mechanical Engineering | Year: 2015

This article describes the synthesis of a state feedback control of an electric propulsion system of a ship propulsion using for such a synchronous motor. The highly nonlinear characteristics of the studied system make it difficult to control. A state feedback control is then necessary. The technique adopted control tested by computer simulation has shown the validity and usefulness of this approach to the pursuit of speed and stator current of the synchronous motor to control the ship speed. © Springer International Publishing Switzerland 2015. Source


Sabri B.,Automatique et Robotique Marine ARM | Dallagi H.,Automatique et Robotique Marine ARM
Lecture Notes in Mechanical Engineering | Year: 2015

The air boost temperature cause a change in the specific fuel oil consumption, the exhaust gas amount and gas temperature and (NOx) emissions of the diesel engine. Controlling emissions is becoming a more and more important task in the development of diesel engines. Today the International Maritime Organization (IMO) is close to completing regulations prescribing the upper limits for nitrogen oxides (NOx) emissions from engines running on ships. The charge air temperature is not constant but varies with the engine load. For the execution of this work we have taken as a model a marine diesel engine type Wartsila NSD 12 ZAV 40S installed a board car ferry. Engine manufacturers provide charts on relationships gas flow, power etc experiments on a dynamometers bench and some Trials aboard. This work is based on data curves and trials for modeling of the control system. The paper is divided into three parts Relationship between the different parameters Design of the control loop Verify the controller design through simulation. © Springer International Publishing Switzerland 2015. Source


Dallagi H.,Automatique et Robotique Marine ARM | Nejim S.,Automatique et Robotique Marine ARM
12th International Multi-Conference on Systems, Signals and Devices, SSD 2015 | Year: 2015

The electrical propulsion vessels are complex, multi variable and highly nonlinear. They require advanced controls ensuring good robustness in stability and performance. This paper focuses on modeling and sliding mode control of electric propulsion system of a ship insured by a double star synchronous motor. We propose a structure of sliding mode control performance which well be applied it to ship electric propulsion system. A numerical study simulation of the proposed control is presented. The simulation results have allowed us to analyze the behavior of the loop for various operating conditions of the system. © 2015 IEEE. Source

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