OPTIMAL SUSPENSION PERFORMANCE FOR 2-D VEHICLE MODELS

A study is described which was a comprehensive investigation of potential benefits of preview control applied to a linear, two-dimensional (2-D), four-degree-of-freedom, half-car model. The model includes vehicle sprung mass pitch and heave dynamics, and front and rear unsprung masses. By using the discrete-time, optimal Linear Quadratic (LQ) control formulation, it is shown that the preview based on front wheel inputs can contribute to up to 70% reduction of vehicle r.m.s. acceleration, for a given suspension travel, and up to 50% reduction in tire deflection, for a given acceleration level. These improvements are in addition to those already achieved with active suspensions without the preview. The results also indicate that, in view of the available preview times, the preview control is most beneficial at higher speeds and rougher roads. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0022460X
• Corporate Authors:

  Academic Press Incorporated

  24-28 Oval Road
  London NW1 7DX,   England 
• Authors:
  • HROVAT, D
• Publication Date: 1991-4-8

Media Info

• Features: References;
• Pagination: p. 93-110
• Serial:
  • Journal of Sound and Vibration
  • Volume: 146
  • Issue Number: 1
  • Publisher: Elsevier
  • ISSN: 0022-460X
  • EISSN: 1095-8568
  • Serial URL: http://www.sciencedirect.com/science/journal/0022460X

Subject/Index Terms

• TRT Terms: Mathematical models; Suspension systems; Vehicle design
• Uncontrolled Terms: Models; Two dimensional
• ITRD Terms: 1243: Car; 3071: Evenness; 6473: Mathematical model; 1329: Suspension (veh); 9083: Two dimensional; 1646: Vehicle handling
• Subject Areas: Design; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00620055
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Mar 31 1992 12:00AM