ANALYSIS OF RANDOM VIBRATIONS IN VEHICLE CONSTRUCTIONS STAND TESTING ON THE BASIS OF CONVERGENCE BASES

The most important problems for the stand testing of motor vehicle constructions are the analysis of a stream of data and the reproduction of the random vibrations corresponding to the real vehicle mode of operations. The methods in existence are based on the use of Fourier basis providing for stationarity of the processes and linearity of an object to be examined. However, the real vibrations do not meet a stationarity condition. In addition, Fourier-analysis requires considerable computations and often leads to mathematical difficulties. The stand testing systems employ a group theory approach to expand the class of the analyzed vibrations and to minimize the computations. Algorithms and programs of a control digital system of a vibration test are based on the use of the characters of the finite Abelian groups and the convergence bases. Adequacy of the spectral characteristics produced in the convergence systems and the traditional bases (Fourier, Vilenkin-Chrestenson-Pontryagin) is shown. About two-thirds of the computer resources are used in an automated control system of the vibration tests for spectral transforms. Therefore, the application of the convergence bases in the system allows to reduce essentially (4-5 times) the computational quantity and to approach the functioning to the real-time mode.

• Supplemental Notes:
  • Proceedings of the International Symposium on Automotive Technology and Automation with particular reference to Computer Aided Engineering and Manufacturing, Volume 2, Wolfsburg 13-17 September 1982.
• Corporate Authors:

  Automotive Automotion Limited

  42 Lloyd Park Avenue
  Croydon CRO 5SB, Surrey,   England 
• Authors:
  • Chegolin, P M
  • Borisov, I F
  • Danilenko, V V
• Conference:
  • Proceedings of the International Symposium on Automotive Technology and Automation with particular reference to Computer Aided Engineering and Manufacturing, Volume 2, Wolfsburg 13-17 September 1982.
• Publication Date: 1982

Media Info

• Features: References;
• Pagination: p. 489-496

Subject/Index Terms

• TRT Terms: Analysis; Automatic control; Calculation; Digital computers; Fourier analysis; Test stands; Testing; Vehicle tests; Vibration
• Uncontrolled Terms: Computation
• Old TRIS Terms: Digital systems; Stand testing
• Subject Areas: Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00373486
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-034 083
• Files: HSL, USDOT
• Created Date: Jun 30 1983 12:00AM