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Drivetrain Modeling, Simulation, and Analysis Using VHDL-AMS
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 03, 2003 by SAE International in United States
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VHDL-AMS, approved by the IEEE in 1999, is the first industry standard hardware description language (HDL) for modeling the many mixed-technology components that exist in modern automotive systems and subsystems. Technologies include electrical (analog and digital), mechanical (rotational and translational), fluidic, magnetic, thermal, etc. VHDL-AMS is a valuable tool for understanding the complex interaction between these technologies, which is essential for the today's engineers in achieving their design goals. In this study, the VHDL-AMS language is used to mathematically model the individual components that form the drivetrain system of an automobile. The components modeled are the engine, clutch, transmission, final drive (differential), drive shaft, brake, wheel, chassis, air drag, and driver. A graphical design environment is used to interconnect the components into system and subsystem models for simulation and analysis. The components have been arranged based on the “forward-facing” approach, where the driver model uses the drive cycle and the actual speeds to develop the appropriate accelerator, brake, gear, and clutch commands. The simulation is performed using the European Driving Cycle, and the results can be used to analyze the effects of system parameters, such as engine ratings and transmission gear ratios, on the overall system performance.
CitationAydin, T., Egel, T., and Ash-Rafzadeh, A., "Drivetrain Modeling, Simulation, and Analysis Using VHDL-AMS," SAE Technical Paper 2003-01-0861, 2003, https://doi.org/10.4271/2003-01-0861.
- Wipke, K.B., Cuddy, M.R., Burch, S.D., “ADVISOR 2.1: A User-Friendly Advanced Powertrain Simulation Using a Combined Backward/Forward Approach”, National Renewable Energy Laboratory, August 1999, IEEE Transactions on Vehicular Technology: Special Issue on Hybrid and Electric Vehicles.
- Nobrant, P., “Driveline Modeling using MathModelica”, Master Thesis, Vehicular Systems, Linköpings Institude of Technolgy, March 2001.
- IEEE Standard VHDL Analog and Mixed-Signal Extensions, March 1999
- Christen, E., Bakalar, K., Dewey, A.M., and Moser E. “Analog and Mixed-Signal Modeling Using the VHDL-AMS Language”, 36th Design Automation Conference, New Orleans, June 1999.
- Ashenden, P.J., Peterson G.D., and Teegarden D.A., “The System Designer's Guide to VHDL-AMS”, Morgan Kaufmann Publishers, September 2002.