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四轴车辆全轮转向的最小转向半径模式研究

Keywords: 四轴车辆,双前桥转向,最小转弯半径模式,摆尾

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Abstract:

通过调整双前桥转向传动机构以适应四轴车辆的全轮转向,研究得出转向中心线由3、4桥中心移至2、3桥中间且靠近3桥对车辆转向特性的影响可以忽略.在双前桥转向的基础上,以降低轮胎磨损、减小转弯半径为目标设计了四轴车辆最小转弯半径模式的控制算法.另外,为减小后两桥车轮向外滚出让驾驶员有摆尾感觉,在控制输出时加入了定延时.仿真结果表明所设计的控制器提高了四轴车辆的机动性,并且有效地改善了摆尾现象.

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