THE CALIBRATION OF A HIGH ACCURACY DYNAMOMETER USING THE EXTENDED KALMAN FILTER--A HYBRID COMPUTER STUDY

Recent advances in road-vehicle fuel management systems have produced a requirement for improved precision in chassis dynamometer test procedures. An accurate simulation of road-load characteristics is necessary to produce repeatable measurements of fuel economy and exhaust emissions for approval purposes. The use of sophisticated digital control systems in a modern dynamometer can assist in achieving the required accuracy. The Kalman filter has long been recognised as a useful tool in the design and synthesis of digital control systems. An extension of the ordinary Kalman filter enables optimal estimates of the state and parameters of a noisy dynamic system to be made from a mathematical model, and noisy measurements. A feasibility study using a hybrid computer describes how the technique can be applied to the calibration of a chassis dynamometer.

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 977-999

Subject/Index Terms

Filing Info

  • Accession Number: 00399933
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: ISATA 84056, HS-038 473
  • Files: HSL, USDOT
  • Created Date: Oct 31 1985 12:00AM