Description: Das Projekt "Vergleich konventioneller Verbundsteuerung von Regenüberlaufbecken mit einer Steuerung auf der Basis von Fuzzy-Logic" wird vom Umweltbundesamt gefördert und von Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Fachgebiet Siedlungswasserwirtschaft durchgeführt. Intention of the study is to compare conventional systems for flow control in combined sewer systems with control systems based on fuzzy logic. The objective of both control strategies is to reduce the combined sewer overflow volume by an optimization of the utilized storage capacities of combined sewer overflow tanks. Conventional real time control of flow in urban drainage systems based on rules is in common use. The Effluent of combined overflow basins, for example, can be adjusted as a function of the water level in the storage tank. Additionally, the hydraulic conditions at other significant points in a sewer system or at the waste water treatment plant can be considered. Therefore, control systems are based on a large number of rules. Instead of conventional control systems it is possible to use control strategies based on fuzzy logic. Fuzzy control combines the simple rules of an expert system with a flexible specification of output parameters. Especially for the control of complex sewer systems, demanding an extensive matrix of different rules, it can be favourable to use fuzzy control. Fuzzy control enables to integrate available operating experiences in an intelligible rule base and avoids abrupt changes of the controlled parameters. In waste water treatment fuzzy control was successfully implemented to improve treatment processes during operation. The possibility to integrate operating experiences of technical staff into the rule base of a fuzzy controller and the flexible reaction of fuzzy logic on dif-ferent combinations of input parameters, led to positive results. So far, fuzzy control has only rarely been used for flow control in sewer systems. ITWH Hannover tested the application of fuzzy control for two differently structured combined sewer systems in order to minimize the storm water overflow volume. The comparison of the studies were solely based on the simulation of uncontrolled and fuzzy - controlled sewer systems for single storm events. In both cases the overflow volume could be re-duced significantly by the use of fuzzy control. The interest of the studies was focused on the initial state in comparison with the state affected by fuzzy control. The objective of the investigation reported here, has been the comparison of a conventional rule based flow control with a fuzzy based flow control. In spite of a similar rule base fuzzy control obviously enables a more flexible sizing of the outflow. The use of fuzzy logic to control several basins in a complex sewer systems helps to avoid sudden and intense changes of the controlled effluents. This leads to steady and proportionate conditions and reduces the overflow volume. In the combined sewer system investigated, a conventional rule based and a fuzzy logic system is generated to control three combined sewer overflow tanks. The control process intends a better utilization of storage capacity to reduce overflow volume
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Hannover ? Gemeingebrauch ? Mischkanalisation ? Schlichtemittel ? Abwassereinleitung ? Kanalisation ? Regenüberlauf ? Wild ? Blei ? Überschwemmung ? Regenrückhaltebecken ? Abwasserleitung ? Abfluss ? Abwasserbehandlung ? Abwasserbehandlungsanlage ? Hydraulik ? Reststoff ? Tankbehälter ? Abfalllager ? Einzugsgebiet ? Abfall ? Abwasser ? Aufbereitungsanlage ? Bewässerung ? Bodenfunktion ? Kontrollsystem ? Siedlungswasserwirtschaft ? Simulation ? Speicherfähigkeit ? Studie ? Wasser ? Strategische Aspekte ? Entwässerung ? Kenngröße ? Lagerung ? Sicherheitsvorschrift ? Urbaner Raum ? Verkehrssicherheit ? Wasserstand ? Vergleich ? Kontrolle ? Funktion ? Verwertung ? Beispiel ? Bemessung ? Hilf ? sonstig ? verfügbar ? vergleichen ? Mischung ? Möglichkeit ? Nachfrage ? Personal ? Überlauf [Wasserbau] ? Vorgang ? Bereich ? Werkzeug ? Betriebserfahrung ? Echtzeit ? Ergebnis ? Zins ? Sachverständiger ? Sicherheitsüberprüfung ? gebraucht ? Sicherungsanordnung ? gemischt ? konventionell ? Steuerung ? Untersuchung ? Verarbeiten ? Vergleiche [benutze Unterbegriffe] ? Fluss [Bewegung] ? Verhältnis ?
Region: Rheinland-Pfalz
Bounding box: 7.5° .. 7.5° x 49.66667° .. 49.66667°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2000-01-01 - 2000-08-31
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