AN ACTIVE SUSPENSION WITH OPTIMAL LINEAR STATE FEEDBACK

In this paper modern optimal control theory is applied to the design of an active suspension system for a motor vehicle. The road profile is assumed to be continuous and random with a power spectral density (p.s.d.) which varies inversely with the square of the frequency. The quadratic integral type performance index employed is a weighted sum of the integral squares of body acceleration, dynamic tyre deflection and relative body-to-axle displacement. A solution is obtained for the infinite time case which is both computationally and physically realizable as an active suspension in which the only continuous measurements required are the body absolute velocity and the body displacement relative to the road. The performance is compared with that of a conventional type passive suspension and found to be significantly better in practically all respects. /Author/TRRL/

  • Availability:
  • Corporate Authors:

    Swets and Zeitlinger BV

    3476 Heerweg, Publications Department
    Lisse,   Netherlands 
  • Authors:
    • THOMPSON, A G
  • Publication Date: 1976-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 187-203
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00159854
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Feb 16 1978 12:00AM