A New Control Strategy to Reduce Steering Torque Without Perceptible Vibration for Vehicles Equipped With Electric Power Steering
A New Control Strategy to Reduce Steering Torque Without Perceptible Vibration for Vehicles Equipped With Electric Power Steering
复制标题
DOI：
10.1115/1.4001838
复制
发表时间：
2010-10
期刊：
影响因子：
--
通讯作者：
Masahiko Kurishige;O. Nishihara;H. Kumamoto
中科院分区：
文献类型：
--
作者：
Masahiko Kurishige;O. Nishihara;H. Kumamoto
本文提出了一种新的电动助力转向控制策略，可显着减少改变静止车辆转向方向所需的工作量。以前减少不良转向振动的尝试未能减少转向扭矩，因为高辅助增益往往会产生振荡或增加噪声敏感性。为了消除这种振动，我们开发了一种基于小齿轮角速度控制的新控制策略，使用新开发的基于简化转向模型的观测器。测试对小齿轮角速度进行了出色的估计，这使得消除所有方向盘旋转速度下的振动成为可能。对测试车辆进行的实验证实，在较宽的方向盘速度范围内，转向扭矩显着降低，且不会将振动传递给驾驶员。所提出的控制策略允许使用比传统方法高出三倍以上的辅助增益。此外，所提出的控制策略不需要补充传感器。 [DOI：10.1115/1.4001838]
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. [DOI: 10.1115/1.4001838]