Active Roll Control to Increase Handling and Comfort

This paper discusses the elaboration of an Active Roll Control (ARC) oriented both on comfort and handling improvement. The ARC determines hydraulically the variation of the equivalent stiffness of the anti-roll bars. The control strategies conceived were extensively validated through road tests managed on an Alfa Romeo sedan. The paper deals with comfort improvement, mainly consisting in an absence of bar effect during straight-ahead travel and in a modification of the roll characteristic of the car. It was necessary to optimize the ratio between front and rear roll stiffness in order to increase driver’s handling feeling. This can be reached through control strategies based exclusively on lateral acceleration. In order to optimize roll damping and front/rear roll stiffness balancing it was necessary to make control strategy corrections. A control logic, based on yaw rate and vehicle sideslip angle estimation, was introduced, with the main purpose to optimize yaw damping during transient maneuvers. Road tests extensively managed validated the efficiency of active roll control strategies conceived. The paper also presents some examples of integrations with other chassis control systems, such as Vehicle Dynamics Control (VDC) and the results from both simulation and road tests are presented and discussed.

Language

  • English

Media Info

  • Media Type: Print
  • Edition: PT-119
  • Features: Figures; References; Tables;
  • Pagination: pp 453-463
  • Monograph Title: Recent Developments in Automotive Safety Technology

Subject/Index Terms

Filing Info

  • Accession Number: 01000086
  • Record Type: Publication
  • ISBN: 0768015030
  • Files: TRIS
  • Created Date: May 5 2005 3:07PM