PowerTrain

Latest release: PowerTrain 1.0.3 (released on 2006/07/07)

Project Description

The PowerTrain library version 1.0 is developed by DLR and distributed by Dynasim AB. It has been totally redesigned and enhanced considerably. This licensed Modelica package provides 1-dimensional rotational mechanical components for vehicle power trains. It is also useful in general for modeling of gears. A typical screenshot of the new version is shown in the figure . The new features include:

• 45 user-callable components (not counting interface objects), 10 example models.
• Efficient and robust handling of speed and torque dependent friction based on new research results. Therefore, gear efficiency is now easy to simulate. Many elements in the library, especially most clutches, gears, planetary gears, automatic gearboxes, engines, have now optional speed and torque dependent losses.
• Bus concept to get rid of the complex connection structures of signal connections and support the user to easily extend the bus with user-defined signals.
• Variant selection using the replaceable feature of Modelica. Basically, there is now just one model - PowerTrain.DriveLine - (see figure) consisting of a typical drive line from which all the main variants provided in the library can be selected, e.g., 3 different types of detailed automatic gearbox models but also user-defined gearboxes.
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• Animation of gears and shafts of a drive line as built-in feature of many components, see, e.g., the animation of a 6-speed automatic gearbox of Lepelletier type in the figure on the right. Animation can be switched off with a parameter to remove the animation code completely from a model, e.g., for hardware-in-the-loop simulation.
• Control units to control the various parts of a drive line. All of them are parameterized with the control lever position of the driver (P, R, N, D, 1, 2, 3, ...) and do not depend on a specific number of gears.
• Sophisticated examples which may be used as a starting point for user drive line models. Especially, examples are provided for power consumption calculation and analysis of shift strategies based on detailed models of 4 and 6 speed automatic gear boxes.
• Improved documentation with a 54 pages tutorial, both in pdf-format and in html-format for online-help, and a 127 pages reference guide in pdf-format.