Otter, M. and Schlegel, C. and Elmqvist, E. (1997) Modeling and Realtime Simulation of an Automatic Gearbox using Modelica. 9th European Simulation Symposium and Exhibition Simulation in Industry, 19.-22.10.97, Passau.
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To speed up the development cycle of electronically controlled mechanical devices, hardware-in-the-loop simulation is used more and more. Applying this method to an automatic gearbox of a car, the electronic transmission control hardware is tested against a model of the gearbox, which is simulated in realtime. Modeling such a system is a demanding task, because its structure varies during gearshift. Since the gearbox investigated has six switching elements (clutches and freewheels) the actual structure has to be found amongst 2^6=64 possible configurations. It is shown how such a variable structure system can be modeled with Modelica and how a consistent configuration can be found in realtime after a gearshift occured. The results presented show that it is possible to simulate variable structure systems in realtime using standard realtime simulation hardware and appropriate software tools.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Modeling and Realtime Simulation of an Automatic Gearbox using Modelica|
|Page Range:||pp. 115-121|
|Keywords:||hardware-in-the-loop, simulation, gearbox, variable structure systems, realtime simulation|
|Event Title:||9th European Simulation Symposium and Exhibition Simulation in Industry, 19.-22.10.97, Passau|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W SY - Technik für Raumfahrtsysteme|
|DLR - Research area:||Space|
|DLR - Program:||W SY - Technik für Raumfahrtsysteme|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Robotics and Mechatronics|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||14 Jan 2010 17:54|
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