A. Bartil , K. Benmmahamed , L. Zouaoui , Parametric and No Parametric Identification of a No Linear System With Search of Order, Asian Journal of Information Technology, Volume 5,Issue 2, 2006, Pages 129-132, ISSN 1682-3915, ajit.2006.129.132, (https://makhillpublications.co/view-article.php?doi=ajit.2006.129.132) Abstract: The developed method uses in a complementary manner, both parametric and no parametric identification techniques. Thus our algorithm consists in the development of a method based on tow approaches: The spectral analysis and Z-transform. The mixed method performance has been tested on simulated system of order 6 and in a no linear system. Keywords: Algorithm;simulation;spectral analysis;search of order;Z-transform;no linear system;parametric;no parametri