Vehicle Side Slip and Roll Angle Estimation

Paper #:
  • 2016-01-1654

Published:
  • 2016-04-05
Citation:
Syed, U. and Vigliani, A., "Vehicle Side Slip and Roll Angle Estimation," SAE Technical Paper 2016-01-1654, 2016, https://doi.org/10.4271/2016-01-1654.
Pages:
8
Abstract:
Vehicle dynamics estimation has been the subject of study for some years now. If on-board vehicle control systems can be provided with information such as side slip angle, lateral force etc. then stability of the vehicle can be improved. To estimate these dynamic variables different observers have been used e.g., sliding mode, fuzzy logic, neural networks etc. In this article the authors propose an extended Kalman filter to estimate vehicle side slip angle. Roll angle is estimated using vertical loads as input. First, a linear Kalman filter is used to filter out the vertical forces and estimate roll angle. This information is then used to estimate the vehicle side slip angle. To take into account the nonlinearities concerning lateral vehicle dynamics, Pacejka magic formula is used to model lateral forces. Estimated results are then compared with simulations, showing good accuracy.
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