Abdelkader Akhenak , Mohammed Chadli , Jose Ragot , Didier Maquin , Multiple Model Approach Modelling: Application to a Turbojet Engine, Journal of Engineering and Applied Sciences, Volume 2,Issue 4, 2007, Pages 798-807, ISSN 1816-949x, jeasci.2007.798.807, (https://makhillpublications.co/view-article.php?doi=jeasci.2007.798.807) Abstract: In this study, we show the interest of multiple model modelling approach to apprehend nonlinear behaviors of physical systems. From experimental data, we develop a model of simple structure which can be exploited in many Fields such as control, diagnosis or for the design of observers. An application on a turbojet plane is presented. Keywords: Multiple model approach;nonlinear system;turbojet engine