期刊
VEHICLE SYSTEM DYNAMICS
卷 49, 期 9, 页码 1497-1520出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423114.2010.527994
关键词
vehicle dynamics control; state estimation; unscented Kalman filter; vertical tyre forces
Vehicle dynamics control (VDC) systems require information about system variables, which cannot be directly measured, e. g. the wheel slip or the vehicle side-slip angle. This paper presents a new concept for the vehicle state estimation under the assumption that the vehicle is equipped with the standard VDC sensors. It is proposed to utilise an unscented Kalman filter for estimation purposes, since it is based on a numerically efficient nonlinear stochastic estimation technique. A planar two-track model is combined with the empiric Magic Formula in order to describe the vehicle and tyre behaviour. Moreover, an advanced vertical tyre load calculation method is developed that additionally considers the vertical tyre stiffness and increases the estimation accuracy. Experimental tests show good accuracy and robustness of the designed vehicle state estimation concept.
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