汽车工程 ›› 2022, Vol. 44 ›› Issue (1): 115-122.doi: 10.19562/j.chinasae.qcgc.2022.01.014

所属专题: 底盘&动力学&整车性能专题2022年

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基于RISF融合的车辆横摆角速度估计

廖尉华1(),何智成2,蒋祖坚1,余天龙1,何逸波1   

  1. 1.上汽通用五菱汽车股份有限公司,柳州  545007
    2.湖南大学,汽车车身先进设计制造国家重点实验室,长沙  410082
  • 收稿日期:2021-09-07 修回日期:2021-10-02 出版日期:2022-01-25 发布日期:2022-01-21
  • 通讯作者: 廖尉华 E-mail:hustlwh@163.com
  • 基金资助:
    国家自然科学基金联合基金(U20A20285)

Vehicle Yaw Rate Estimation Based on Reliability Indexed Sensor Fusion

Weihua Liao1(),Zhicheng He2,Zujian Jiang1,Tianlong Yu1,Yibo He1   

  1. 1.SAIC GM Wuling Automobile Co. ,Ltd. ,Liuzhou  545007
    2.Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Changsha  410082
  • Received:2021-09-07 Revised:2021-10-02 Online:2022-01-25 Published:2022-01-21
  • Contact: Weihua Liao E-mail:hustlwh@163.com

摘要:

使用车载角速度传感器测量获得的横摆角速度,存在噪声干扰大、量测值滞后等问题。为了提高车辆横摆角速度估计的精确性,本文中设计了一种基于可靠指标传感器融合(reliability indexed sensor fusion,RISF)多源传感信息融合的估计算法。首先,使用自适应容积卡尔曼滤波算法对横摆角速度传感器量测值进行滤波;然后,建立考虑道路侧倾角的自行车模型,使用车载轮速、前轮转角和横向加速度传感器信号,建立动力学递推公式,并使用阿克曼定理的计算结果作为状态更新值,估计出横摆角速度;最后,设计基于RISF的自适应卡尔曼滤波框架融合传感器滤波值和模型估计值。实车道路测试结果表明:该方法可估计出道路侧倾角,RISF融合值比单一传感器滤波的估计效果更好。

关键词: 自适应容积卡尔曼滤波, 自行车模型, 阿克曼定理, RISF, 车辆横摆角速度估计

Abstract:

The yaw rate measured by on-board angular velocity sensor is inevitably contaminated by sensor noise, and is also with hysteresis. In order to improve the accuracy of yaw rate estimation, this paper presents an estimation algorithm based on Reliability Indexed Sensor Fusion (RISF) multi-source sensor information fusion . Firstly, the yaw rate sensor’s measured value is filtered by an algorithm of adaptive cubature Kalman filter(ACKF). Secondly, the yaw rate is estimated using kinematics method by a single track model, which takes road bank angel into account. Through this model, recursive formulas are established using velocity, front wheel steering angel and lateral acceleration as input, and also using Ackermann steering geometry's output as update value. Lastly, an adaptive Kalman filter based on RISF (RISF-AKF) is applied to fuse the filtered value with the model estimation. A real vehicle road test shows that the RISF-AKF method can estimate road bank angel precisely, and the RISF fusion value has a better performance than the single sensor processed value.

Key words: adaptive cubature Kalman filter, single track model, Ackermann steering geometry, RISF, yaw rate estimation