The invention relates to a method for determining at least one road characteristic (40) for an electric vehicle (50), in which a wheel position (φ 1, φ 2) and/or a wheel speed (n1, n2) of at least one wheel (54) of the electric vehicle (50) is detected at high frequency by means of at least one wheel sensor (56), and a rotor position (φ EM) and/or a rotor speed (n EM) of an electric machine (52) coupled to the at least one wheel (54) is detected at high frequency by means of a rotary encoder (57) or is estimated without a rotary encoder. Starting from the detected wheel position (φ 1, φ 2) and/or wheel speed (n1, n2) a rotor position and/or rotor speed (formula (I)) of the electric machine (52) is estimated, and a rotor position error (e φ EM) and/or rotor speed error (e n EM) is determined from the estimated rotor position and/or the estimated rotor speed (formula (I)) and the rotor position (φ EM) and/or rotor speed (n EM) detected or estimated without a rotary encoder. The determined rotor position error (e φ EM) and/or the determined rotor speed error (e n EM) are evaluated over time, and, starting from an evaluation result, at least one road characteristic (40) is determined and is provided as a road characteristic signal (41). The invention also relates to a device (1) for determining at least one road characteristic (40) for an electric vehicle (50).
VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN MINDESTENS EINER FAHRBAHNEIGENSCHAFT FÜR EIN ELEKTROFAHRZEUG
METHOD AND DEVICE FOR DETERMINING AT LEAST ONE ROAD CHARACTERISTIC FOR AN ELECTRIC VEHICLE
PROCÉDÉ ET DISPOSITIF POUR DÉTERMINER AU MOINS UNE CARACTÉRISTIQUE DE ROUTE POUR UN VÉHICULE ÉLECTRIQUE
2024-01-17
Patent
Electronic Resource
German
IPC: | 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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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