Real-Time Powertrain Module for Vehicle Simulation

Abstract

A two state, engine speed and wheel speed, powertrain model is developed with bondgraph theory and coded in the C programming language for real-time simulation and comparison to the same model implemented in the MATLAB Simulink/Stateflow environment. Both throttle and braking are inputs with adjustable engine, transmission, and vehicle parameters. The structure of the model implementation provides for decoupled transmission and driveline modules for modularity. Gear shifting is accomplished with a shift delay of 0.8 seconds. A fixed step Runge-Kutta integration scheme is used with a time step of 0.01 seconds. Two throttle input cases are compared for each model with the results being essentially the same for each case - peak differences are attributed to signal shift on transition edges. Simulation time for each case was 200 seconds and was achieved within 5 seconds real-time. This is a 40:1 simulation time to real-time ratio.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2002
Accession Number
ADA402625

Entities

People

  • Wesley Bylama

Organizations

  • Tank-automotive and Armaments Command

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Automatic Transmissions
  • C Programming Language
  • Computational Science
  • Computer Programming
  • Computer Programs
  • Computers
  • Converters
  • Equations
  • Equations Of State
  • Final Drives
  • Language
  • Programming Languages
  • Simulations
  • Simulators
  • Torque Converters
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Computational Modeling and Simulation
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).