A parameter calculation part (390) calculates an adaptive gain coefficient 'k' for the road surface conditions of the road being traveled upon, on the basis of a frictional coefficient µ and a slip ratio » sent from an acquisition part (310) and a coefficient 'b' in a storage part (380). Subsequently, the parameter calculation part (390) calculates an adaptive time constant Ä by which the stability of traction control can be ensured, on the basis of the gain coefficient 'k' and a coefficient 'a' within the storage part (380). Along with the calculated gain coefficient 'k' being set in a gain multiplication part (370), the calculated time constant Ä is set in a filter part (360). According to these settings, model following control is executed by taking, as a reference model, an adhesion model in which driving wheel does not slip. As a result, it is possible to enhance the slip prevention performance while ensuring control stability, and also possible to implement stable traveling while ensuring the required drive force in accordance with the road surface state.
TRACTION CONTROL DEVICE, AND TRACTION CONTROL METHOD
ANTRIEBSREGELUNGSVORRICHTUNG UND ANTRIEBSREGELUNGSVERFAHREN
DISPOSITIF DE COMMANDE DE TRACTION ET PROCÉDÉ DE COMMANDE DE TRACTION
2018-08-22
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |