Abstract

New approach to understanding the dynamic energy change index (D^.E) of the steering system as an analogy of the Enthalpy of thermodynamics are studied in this paper. Dynamic energy change (D^.E) is an index of the interaction of driver's control maneuvers and the vehicle behavior. The Enthalpy is addition of internal energy and the PV work-kinetic energy. The feature in the internal energy is to be able to show the I/O of the mass and the calorie to "Observation system ".It thought the operation movement of the steering wheel to be a molecular motion in equivalence. It is shown that P_0 term of D^.E has the Character similar to internal energy. It becomes possible to extract the driver's steer intention as a result of confirming the phenomenon by the Simulation and the vehicle test.

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