Wheelslip control method for electric vehicles

The present invention relates to a wheel slip controlling method for an electric vehicle. More specifically, using a machine learning technique, friction coefficient of the road surface is estimated more accurately. Through the same, an upper limit value of a motor torque is calculated and a motor d...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEE SOON KYO, KIM YOUNG HOON, SUK LEE
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:The present invention relates to a wheel slip controlling method for an electric vehicle. More specifically, using a machine learning technique, friction coefficient of the road surface is estimated more accurately. Through the same, an upper limit value of a motor torque is calculated and a motor driver is controlled according to the calculated upper limit value. As a result, a wheel slip of the electric vehicle, where the wheel slip is more likely to occur on a low-friction road compared to an internal combustion engine vehicle, can be controlled more accurately. 본 발명은 전기차용 휠슬립 제어방법에 관한 것으로, 보다 상세하게는 머신러닝 기법을 이용하여 노면의 마찰계수를 보다 정확히 추정하고, 이를 통해 모터 토크의 상한값을 연산하여 연산된 상한값에 따라 모터 드라이버를 제어함으로써 내연기관 차량에 비해 저마찰로에서 휠슬립(wheelslip)이 발생할 가능성이 높은 전기차의 휠슬립을 보다 정확히 제어할 수 있도록 하는 전기차용 휠슬립 제어방법에 관한 것이다.