Level and attitude control of the active suspension system with integral and derivative action

A 7-DOF full-car model with optimal active control suspension is utilized to evaluate the vehicle dynamic performances which are achieved through proposed controllers. The optimal controller, which includes the integral action for the suspension deflection, considerably improves the attitude control of a vehicle because the rolling and pitching motion in cornering and braking maneuvers are reduced, respectively. In the viewpoint of level control, the integral control acting on the suspension deflection results in the zero steady-state deflection in response to static body forces and ramp road input. The dynamic characteristics of the suspension control system are evaluated in terms of time domain and frequency domain. The simulations in the time domain demonstrate the advantages of the active suspension system obtained by penalizing the integral and derivative of suspension deflections and the derivative of roll and pitch angles in the performance index. The frequency characteristic curves obtained by simulations regarding integral action or derivative action show the increase of both ride comfort and road-holding performances by maximizing the use of suspension deflections. The potential of derivative control is shown by the performances of the car traveling over a bump and braking. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00423114
• Authors:
  • YOUN, I
  • TOMIZUKA, M
• Publication Date: 2006-9

Language

• English

Media Info

• Pagination: 659-674
• Serial:
  • Vehicle System Dynamics
  • Volume: 44
  • Issue Number: 9
  • Publisher: Taylor & Francis
  • ISSN: 0042-3114
  • EISSN: 1744-5159
  • Serial URL: https://www.tandfonline.com/toc/nvsd20/current

Subject/Index Terms

• TRT Terms: Control; Driving; Dynamics; Force; Mathematical models; Scale models; Simulation; Suspension systems
• Uncontrolled Terms: Optimum
• ITRD Terms: 3874: Control; 5473: Dynamics; 5421: Force; 6473: Mathematical model; 6205: Model (not math); 9103: Simulation; 1329: Suspension (veh); 1646: Vehicle handling
• Subject Areas: Bridges and other structures; Vehicles and Equipment; I90: Vehicles; I91: Vehicle Design and Safety; I92: Vehicle Comfort;

Filing Info

• Accession Number: 01037061
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Nov 21 2006 8:47AM