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Development of a Virtual 7-Post Test Rig for Experimental Validation

[+] Author Affiliations
B. J. Chan, Corina Sandu

Virginia Polytechnic Institute and State University

Paper No. IMECE2006-13971, pp. 155-161; 7 pages
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Design Engineering and Computers and Information in Engineering, Parts A and B
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4767-5 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME


A seven-post test rig is an experimental device that allows the simulation/recreation of driving conditions (e.g., racing track conditions) in the controlled environment of the laboratory. In general, the vehicle models used for tuning the real vehicle are very simplified. This may lead to differences between the results obtained using the computer model and the actual vehicle behavior as measured when mounted on the seven post test rig. This paper presents an effort to create a virtual seven post model to analyze the difference between the actual laboratory tests and the virtual model with the simplified vehicle models. A simplified full-car model is mounted on the virtual seven post rig with the ideal road input and the ideal parameters. Data from the simulation is meant to be compared with the actual experimental data from the rig to provide insight into tuning the suspension of the vehicle to optimize the tire force generation and vehicle handling. Moreover, a virtual seven post rig will allow researchers to run simulations of tuned vehicles or develop control policies for suspension system prior to performing the tests on the actual rig. The virtual rig will actually save development time and eliminate dangerous scenarios, and reduce the possibility of damaging the rig.

Copyright © 2006 by ASME



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