SIMPLIFIED PROCEDURE FOR DETERMINING LATERAL STABILITY OF HEAVY VEHICLE COMBINATIONS

Rearward amplification is a common way of characterising lateral stability in heavy vehicles. This measure describes the amplification of the movements of the trailing units relative to the movements of the motor vehicle during some kind of steering manoeuvre. In ISO 14791, three different test procedures for determining rearward amplification are described. The results from these three methods will differ. The results, obtained in the time domain, provide only the composite gain of the system as results from the distributed frequency content of the specific lane change performed in the test. One of the time-domain methods is a path-following lane change. This is particularly difficult to perform with sufficient reliability and reproducibility. This paper presents an alternative procedure to estimate rearward amplification in the time domain, that is, for a path-following lane change or for the open-loop, single sine-wave steer manoeuvre. In this new procedure, transfer functions for the appropriate vehicle motions are first obtained from using the pseudo-random test method. These functions, along with the input signals of specified manoeuvres in the time domain, are used to estimate the vehicle responses in the time domain. The maximum rearward amplification for the specified manoeuvre can then be determined using the estimated time responses. (a) For the covering entry of this conference, please see IRRD 895232.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0869107658
• Corporate Authors:

  CONFERENCE ORGANISING COMMITTEE (C/- ROADUSER RESEARCH)

  525 SPENCER STREET
  MELBOURNE, VICTORIA  Australia  3003
• Authors:
  • AURELL, J
  • KOPPENAAL, J
• Conference:
  • INTERNATIONAL SYMPOSIUM ON HEAVY VEHICLE WEIGHTS AND DIMENSIONS, 5TH, 1998, MAROOCHYDORE, QUEENSLAND, AUSTRALIA, PART 1
• Publication Date: 1998

Language

• English

Media Info

• Features: References;
• Pagination: p. 130-46

Subject/Index Terms

• TRT Terms: Conferences; Driving; Measurement; Mechanical stability; Motor vehicles; Test procedures; Traffic lanes; Yaw; Yaw
• Uncontrolled Terms: Articulated vehicles
• ITRD Terms: 1225: Articulated vehicle; 8525: Conference; 1855: Driving (veh); 6136: Measurement; 6288: Test method; 2827: Traffic lane; 1646: Vehicle handling; 1636: Yawing (veh)
• Subject Areas: Data and Information Technology; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00761479
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-86910-765-8
• Files: ITRD, ATRI
• Created Date: Apr 6 1999 12:00AM