Artificial neural networks are used to estimate side slip angle and yaw rate of a vehicle's lateral dynamics. The networks are adapted to varying operating conditions such as a shift in vehicle weight, a change in road surface, and a radical change in tire characteristics. The structure and characteristics of the networks used are detailed. The methods for both offline and online training are described. Adaptation to the changing conditions is investigated with a high fidelity model and evaluated for ability and accuracy. A method of reducing computational burden while preserving model generalization is described. Model accuracy and generalization are examined to evaluate the networks' ability to describe general vehicle behavior. Improvement in estimate error of 3 to 1 and nearly 300 to 1 for two typical scenarios is demonstrated.
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