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S. Helm, S. Winter, M. Kozek:
"A dynamic hybrid model of a vehicle clutch for HiL applications";
Talk: 6th Vienna Mathmod 09, Vienna; 2009-02-11 - 2009-02-13; in: "Proceedings of the 6th Mathmod Vienna 09", Argesim Report, No. 35 (2009), ISBN: 978-3-901608-35-3; Paper ID 258, 7 pages.

The purpose of the presented approach is to present a dynamic, hybrid model of a friction clutch for a hybrid vehicle. The clutch model itself is based on a hybrid state machine, programmed as an external C-function for Dymola and incorporates a friction model which depends on the relative speed of the clutch plates. The state machine is represented by 3 discrete states ´open´, ´closed´ and ´reopening´ and can be parameterized by a small number of parameters. The model of he vehicle clutch is then integrated into a complete model of a hybrid vehicle and tested in a simulation as well as on a Hardware in the Loop test bench. Therefor the clutch model has a real-time capability.