Partial base model for friction coefficient at point on road. Extend this model appropriately to define final user model.
partial function frictionCoefficientBase extends Modelica.Icons.Function; input Real s = 0 "Roads surface parameter 1 (usually arc length along road)"; input Real w = 0 "Roads surface parameter 2 (usually lateral direction)"; output Real mu = 1 "Roads friction coefficient at (s,w)"; end frictionCoefficientBase;