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International Journal of Automotive Technology > Volume 22(6); 2021 > Article
International Journal of Automotive Technology 2021;22(6): 1485-1494.
doi: https://doi.org/10.1007/s12239-021-0128-x
TRACTION CONTROL USING A DISTURBANCE OBSERVER FOR HYBRID ELECTRIC VEHICLES
Sangjoon Kim1,2, Sung Hoon Yu1, Hyeongcheol Lee2
1Hyundai Motor Company
2Hanyang University
PDF Links Corresponding Author.  Hyeongcheol Lee , Email. hclee@hanyang.ac.kr
ABSTRACT
This paper presents a practical approach designing a traction controller based on disturbance observer (DOB) in hybrid electric vehicles (HEVs). To conduct the traction control of HEVs, the proposed control scheme estimates disturbances in a specific frequency range caused by wheel-slips and reduces driving force in accordance with the estimated disturbance. A band pass filter is employed to the DOB to extract the disturbance in a specific frequency range causing wheel slip. In addition, a proportional-integral (PI) type regulator is applied to effectively reject the disturbances. To validate the proposed control algorithm, actual vehicle tests are performed using a C-segment HEV sport utility vehicle (SUV). The test results show that the proposed control algorithm achieved more enhanced energy efficiency as well as better ride comfort with maximizing traction force than the conventional control algorithm.
Key Words: Traction control, Disturbance observer, Hybrid electric vehicle
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