\babel@toc {french}{}\relax \contentsline {section}{Introduction}{1}{section*.1}% \contentsline {section}{\numberline {1}Modélisation du système}{2}{section.1}% \contentsline {section}{\numberline {2}Retour de sortie}{5}{section.2}% \contentsline {section}{\numberline {3}Retour d'état}{6}{section.3}% \contentsline {subsection}{\numberline {3.1}Retour d'état par ZOH}{7}{subsection.3.1}%