CAJ | 학술논문

本文提出了一种新的电动助力转向系统的控制策略，以减小车辆静止时改变方向所需的转向力。以前尝试通过减少不良的转向振动来减少转向扭矩失败的原因是因为高辅助增益往往会产生震荡或增加噪声敏感性。为了消除此种振动，开发出一种基于控制齿轮角速度的控制策略，它是在简化的转向模型的基础上开发出来的。这个实验获得了很好的齿轮角速度的估计值，这样就有可能消除方向盘所有旋转速度下的振动。实验证明在方向盘大转速变换下，转向扭矩显著降低，无振动传输给司机。所提出的控制策略使用一个辅助来获得超过原来的三倍以上的增益。此外，所提出的控制策略不需要补充传感器。
본문제출료일충신적전동조력전향계통적공제책략，이감소차량정지시개변방향소수적전향력。이전상시통과감소불량적전향진동래감소전향뉴구실패적원인시인위고보조증익왕왕회산생진탕혹증가조성민감성。위료소제차충진동，개발출일충기우공제치륜각속도적공제책략，타시재간화적전향모형적기출상개발출래적。저개실험획득료흔호적치륜각속도적고계치，저양취유가능소제방향반소유선전속도하적진동。실험증명재방향반대전속변환하，전향뉴구현저강저，무진동전수급사궤。소제출적공제책략사용일개보조래획득초과원래적삼배이상적증익。차외，소제출적공제책략불수요보충전감기。
This paper proposes a new electric power steering control strategy, which significantly reduces the effort needed to change the steering direction of stationary vehicles, previous attempts to reduce undesirable steering vibration have failed to reduce the steering torque because high-assist gains tend to produce oscillation or increase noise sensitivity Herein, to eliminate this vibration, a new control strategy was developed based on pinion angular velocity control using a newly developed observer based on a simplified steering model. Tests yielded excellent estimations of the pinion angular velocity, and this made it possible to eliminate vibration at all steering wheel rotation speeds. Experiments with a test vehicle confirmed significant steering torque reduction, over a wide range of steering wheel speeds, without vibration transmission to the driver. The proposed control strategy allowed use of an assist gain more than three times higher than is conventional Additionally, the proposed control strategy does not require supplemental sensors.