A control apparatus and method for a two motor drive system of an electric vehicle A spline connects the two Motors, and a second spline connects a motor to a transmission. The control apparatus is configured to in positive driving traction, initiate torque change of the first motor and delay torque change of the second motor, in negative driving traction, initiate torque change of the second motor and delay torque change of the first motor, in downshift of the transmission, initiate torque change of the first motor and delay torque change of the second motor, and in upshift of the transmission, initiate torque change of the second motor and delay torque change of the first motor. The control of torque and the initiation sequence of torque change between the two motors is such that impacts from backlash are substantially reduced, and vibration and noise phenomena are minimal.
Method of drive quality control and shift management for electric vehicles involving multiple traction drive motors
2020-08-18
Patent
Electronic Resource
English
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 |
European Patent Office | 2020
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