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.

本文提出了一种基于干扰观测器 (DOB) 的混合动力电动汽车 (HEV) 牵引力控制器设计的实用方法。为了进行 HEV 的牵引力控制，所提出的控制方案估计由车轮打滑引起的特定频率范围内的扰动，并根据估计的扰动降低驱动力。带通滤波器用于 DOB 以提取特定频率范围内导致车轮打滑的干扰。此外，采用比例积分 (PI) 型调节器可有效抑制干扰。为了验证所提出的控制算法，使用 C 级 HEV 运动型多功能车 (SUV) 执行实际车辆测试。