07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik

Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/8

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Institute: search.filters.UBSInstitut.Sonstige EinrichtungAuthor: search.filters.author.Allgöwer, Frank

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    Chemical process control : present status and future needs ; the view from European industry
    (1991) Schuler, Hans; Allgöwer, Frank; Gilles, Ernst Dieter
    Not only in Europe, chemical process control is characterized by a broad invasion of distributed control systems into chemical plants. The information integration from process control up to business management is a great challenge of today which follows from the overall computerization of production. Most of the recent progress in process automation results from the application of computer science paradigms to control systems, and of advanced developments in field instrumentation. Despite these advances and the considerable progress made in process control theory, there is only limited acceptance and application of modern advanced process control methodologies in industrial practice. This paper is an attempt to summarize the European discussion on the reasons for these facts.
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    μ-Suboptimal design of a robustly performing controller for a chemical reactor
    (1994) Amann, Notker; Allgöwer, Frank
    The design of robustly performing controllers for an important class of control problems is treated. The problem is dealt with in the structured singular value (μ)-framework. The systems considered are characterized by weak nonlinearities and parametric and unstructured uncertainties. Nonlinear effects are taken into account via linearization families. Parametric uncertainty is included in a non-conservative way. Both lead to a μ-synthesis problem with repeated scalar real perturbations. As no direct solution to such a μ-synthesis problem is known to date, an iterative approach comprising both μ-analysis of the actual problem and D-K-iteration for a modified problem is shown. This approach is applied to a realistic continuous stirred-tank reactor for production of cyclopen-tenol to show the applicability to non-trivial MIMO process control problems.
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    Dynamische Simulation verfahrenstechnischer Prozesse und Anlagen : ein Vergleich von Werkzeugen
    (1994) Watzdorf, Rüdiger von; Allgöwer, Frank; Helget, Andreas; Marquardt, Wolfgang; Gilles, Ernst Dieter
    Zusammenfassend zeigen unsere Erfahrungen, daß sich prinzipiell alle betrachteten Werkzeuge zur Simulation verfahrenstechnischer Prozesse und Anlagen eignen. Die Werkzeuge zeichnen sich allerdings durch eine unterschiedliche Zielrichtung aus: SlMULINK bietet einen sehr hohen Modellimplementierungs-, Verschaltungs- und Bedienkomfort; ACSL und SPEEDUP sind für die Modellierung und Implementierung neuer Modelle besonders geeignet, wobei SPEEDUP speziell die Bedürfnisse der Verfahrenstechnik unterstützt; DIVA ist weniger auf den Modellierer und mehr auf den Anwender ausgerichtet, der aus vorhandenen Bibliotheken Modelle auswählt, parametriert und verschaltet.