DIGITAL PROCESSING OF MEASURED VIBRATION DATA FOR AUTOMOBILE RIDE EVALUATION

This paper is concerned with the measurement and processing of motor vehicle ride vibration data so that comfort can be assessed. Typical vibrations experienced are random, with some periodic components sometimes included. Measures that are of interest include r.m.s. (root mean square) acceleration in the three linear directions relative to the passengers' orientations, spectral density and one-third octave band r.m.s. acceleration levels. Procedures are described using digital analysis techniques. The effects of detrending, and windowing are considered and are shown to have little overall effect in calculating spectral values. Special consideration is given to the coverage here of the low frequency range 0.1 to 40 cycles per second. Typical results are shown for automobiles riding over highways having a wide range of roughness.

Media Info

  • Pagination: p. 1-17

Subject/Index Terms

Filing Info

  • Accession Number: 00176589
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jul 29 1978 12:00AM