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Vehicle Tire Force Estimation Based on Square-root Unscented Kalman Filter
Author(s): WU Tao, FAN Xue-qiong, JIAO Jing, ZENG Li-hua
Pages: 24-
28,38
Year: 2016
Issue:
2
Journal: Vehicle & Power Technology
Keyword: 平方根UKF; 车辆动力学; 状态估计; 轮胎力;
Abstract: 针对车辆行驶过程中各车轮轮胎力等状态参数,在现有测量水平及成本下难以找到较适用的传感器直接测量的问题,提出利用七自由度车辆动力学模型结合平方根UKF算法的汽车轮胎力估计方法.利用该算法具有的无需计算雅可比矩阵和较高的非线性近似精度等优点,在无需建立轮胎力学模型的前提下,确保了迭代UKF的数值稳定,实现对汽车轮胎力估计.应用CarSim软件进行仿真对比试验,仿真结果表明,基于平方根UKF的汽车轮胎力估算方法对各轮胎的纵向力和侧向力估计比较准确,验证了该方法的有效性.
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