Journal
VEHICLE SYSTEM DYNAMICS
Volume 44, Issue 7, Pages 513-527Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423110500422312
Keywords
side-slip angle observer; tire model; sensitivity analysis
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We investigated the sensitivity of an observer based on a tire model using simulation in linear and nonlinear regions. In the linear region, we investigated the influence of vehicle speed by doing the same simulation at three speed levels. In the nonlinear region, the simulation condition was set such that the vehicle became unstable. In the linear region, steering input and cornering stiffness have a relatively large effect on the estimation error because these quantities determine tire side force. In the nonlinear region, the road surfaces friction coefficient becomes a crucial factor. In both the regions, the observer is sensitive to yaw rate and longitudinal speed.
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