Disclosed is a creep torque control method of an electric vehicle which improves a creep driving feeling by varying a creep torque reduction speed in accordance with a braking intensity and a road state and prevents braking performance from being degraded. The creep torque control method of an electric vehicle secures a creep torque demand in accordance with a braking force in a creep driving mode, calculates a creep torque lowering rate based on the braking force, a braking force change rate, and the creep torque demand, calculates creep torque by reflecting the creep torque lowering rate to the creep torque demand, and controls creep driving of the vehicle by driving a motor by the calculated creep torque.
본 발명은 제동의 세기 및 도로상태에 따라 크립토크 저감속도를 가변하여 크립 주행감을 개선하고 제동성능의 저하를 방지하는 것으로, 본 발명에서는, 크립주행모드에서 제동력에 따른 크립토크요구량을 확보하고; 크립주행 중 제동력이 인가되는 경우, 상기 제동력과 제동력변화율과 크립토크요구량을 기반으로 크립토크하강율을 산출하며; 상기 크립토크하강율을 크립토크요구량에 반영하여 크립토크를 산출하고; 상기 산출된 크립토크에 의해 모터를 구동하여 차량의 크립주행을 제어하는 것을 특징으로 하는 전기차량의 크립토크 제어방법이 소개된다.
CREEP TORQUE CONTROL METHOD OF ELECTRIC VEHICLES
전기차량의 크립토크 제어방법
2020-06-08
Patent
Electronic Resource
Korean
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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