Real-time tire model for ICU implementation

01.01.2006 - 15.09.2008
Research funding project
The objective of the project is the development of a tire model, designed to run in real-time on an embedded automotive control unit in order to enable tire force based vehicle dynamic control for all driving situations. Standard tire models for simulations published in books and scientific papers like Magic Formula, HSRI-Model or Brush-Models are very complex. They are based on physical models describing the properties of the tire and are very accurate with appropriate parameters. In real-time systems, they can not be used because of their computational complexity and their long list of unknown parameters. Other tire models implemented in vehicle stability systems (ESP, DSC, VDC,...) have a low computational effort and a limited number of parameters, however, they are designed to operate only in critical driving conditions where fast and robust performance is more important than accuracy. Therefore, a tire model is sought for which will satisfy both the requirements of low computational effort and high accuracy, in order to work with high performance in a wide range of driving conditions. The concept of a drive-by-wire vehicle demands such a comprehensive and accurate yet compact model. Due to the safety relevant nature of the application a fault detection and diagnosis system has to be implemented. Thus, the following research goals can be defined: 1. Evaluation of existing tire models regarding their use in an embedded system 2. Finding a suitable structure for an adaptive yet compact tire model 3. Development of a stable and robust parameter estimation algorithm 4. Analysis and simulation of robustness concerning parameter variations 5. Implementation of a fault detection and diagnosis system 6. Protection of intellectual property by patents Because steps 2 and 3 are closely connected they can be seen as an iterative process.

People

Project leader

Project personnel

Institute

Contract/collaboration

  • TTTech Computertechnik AG

Grant funds

  • FFG - Österr. Forschungsförderungs- gesellschaft mbH (National) Austrian Research Promotion Agency (FFG)

Research focus

  • Computational System Design: 100%

Keywords

GermanEnglish
Reifenmodelltire model
Echtzeitanwendungreal-time application

Publications