This paper summarizes the results of a study whose purpose was to analyze and correlate recent data on the directional response and performance of driver/vehicle systems. The driving situations considered included open and closed loop limit maneuvers, avoidance maneuvers, and nominal closed loop regulation and maneuver tasks. For automobiles, the two parameters (gain and time constant) used in most of the correlation plots effectively describe the key handling properties. The available data suggest composite boundaries for steady state steering gain and effective time constant, based on a combination of system performance and workload-related driver subjective opinion measures. The resulting criteria plot, defined at 50 mph shows that there is a range of steering gains which are satisfactory - the unsatisfactory regions involving values which are either too low or too high. There is also an upper limit on the effective time constant beyond which the vehicle's directional response is not rapid enough. This upper limit varies with steering gain.

  • Supplemental Notes:
    • Preprint for meeting held February 27-March 3, 1978.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Weir, D H
    • DiMarco, R J
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00180118
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 780010
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM