Modelling and analysis of a production plant for low density polyethylene [Elektronische Ressource] / von Martin Häfele

ModellingandAnalysisofaProductionPlantforLowDensityPolyethyleneDissertationzurErlangungdesakademischenGradesDoktoringenieurin/Doktoringenieur(Dr. Ing.)vonDipl. Ing. MartinHäfelegeb. am1971 04 28inTettnanggenehmigtdurchdieFakultätfürElektrotechnikundInformationstechnikderOtto von GuerickeUniversitätMagdeburgGutachter:Prof. Dr. Ing. AchimKienleProf. SubramaniamPushpavanamPromotionskolloquiumam2006 12 07Page ii of 140AcknowledgementsThis thesis is the result of an employment at both the Institute for System Dynamicsand Control (University Stuttgart), where I initially started the studies towards thePhDdegreein1997,andtheMaxPlanckInstituteforDynamicsofComplexTechni calSystems(Magdeburg),wherethesestudieswerecontinuedfrom1998onwards.I am gratefully thankful to my scientific supervisor Prof. Dr. Achim Kienle forhis kindness and readiness to help me during the whole period of preparation of thiswork, for his suggestions, useful discussions and always very constructive criticism.Moreover I want to thank him for being not only a supervisor but also a friend whowasalmostimpossibletobeatintennis. ForhisinterestinthisworkIamthankfultoProf. Subramaniam Pushpavanam, who not only helped me with fruitful discussionson non linear model analysis but who also made me finalize this work by suggestinganone monthscientificstayinMagdeburgin2006.Next, I want to thank the cooperation partners, Dr. Frank Olaf Mähling and Dr.