汽车工程 ›› 2022, Vol. 44 ›› Issue (2): 280-289.doi: 10.19562/j.chinasae.qcgc.2022.02.016

所属专题: 底盘&动力学&整车性能专题2022年

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基于冗余信息融合的车辆质心侧偏角估计方法

夏秋1,2,陈特1,陈龙1(),徐兴1,蔡英凤1   

  1. 1.江苏大学汽车工程研究院,镇江 212013
    2.滁州学院机械与电气工程学院,滁州 239000
  • 收稿日期:2021-08-31 修回日期:2021-10-29 出版日期:2022-02-25 发布日期:2022-02-24
  • 通讯作者: 陈龙 E-mail:chenlong@ujs.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(U20A20331);国家重点研发项目(2018YFB0105003);江苏省六大人才高峰项目(产业前瞻与共性关键技术)(2018-TD-GDZB-022)

Vehicle Sideslip Angle Estimation Method Based on Redundant Information Fusion

Qiu Xia1,2,Te Chen1,Long Chen1(),Xing Xu1,Yingfeng Cai1   

  1. 1.Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013
    2.School of Mechanical and Electrical Engineering,Chuzhou University,Chuzhou 239000
  • Received:2021-08-31 Revised:2021-10-29 Online:2022-02-25 Published:2022-02-24
  • Contact: Long Chen E-mail:chenlong@ujs.edu.cn

摘要:

车辆质心侧偏角是表征车辆横向稳定性的重要参数之一,相关的估计方法研究可为整车稳定控制提供重要支撑。为提高车辆质心侧偏角估计效果,提出了一种基于冗余信息融合的质心侧偏角估计方法。分别建立了车辆动力学模型和运动学模型,利用容积卡尔曼滤波算法分别设计了用于车辆行驶状态估计的动力学模型估计器和运动学模型估计器,同时,分析了动力学模型估计器和运动学模型估计器的内在特性和适用范围,并在此基础上提出了基于冗余信息融合的车辆质心侧偏角估计方法,从而通过自适应权重动态调节的方式来充分结合动力学模型估计器和运动学模型估计器的优点。进行了CarSim-Simulink联合仿真测试与实车道路试验,结果表明,所设计的车辆质心侧偏角估计方法能有效提高车辆状态估计精度和多工况适应能力。

关键词: 状态估计, 质心侧偏角, 卡尔曼滤波, 信息融合

Abstract:

Vehicle sideslip angle is one of the important parameters to characterize the lateral stability of vehicle, and the study on related estimation methods can provide important support for vehicle stability control. In order to improve the effectiveness of vehicle sideslip angle estimation, a method of vehicle sideslip angle estimation based on redundant information fusion is proposed in this paper. The vehicle dynamic model and kinematic model is established respectively, and the dynamic-model-based estimator and kinematic-model-based estimator for vehicle driving state estimation are designed by using the cubature Kalman filter algorithm. At the same time, the inherent characteristics and application scope of the dynamic-model-based estimator and the kinematic-model-based estimator are analyzed, and on this basis, a vehicle sideslip angle estimation method based on redundant information fusion is proposed to fully integrate the advantages of dynamic-model-based estimator and kinematic-model-based estimator by means of adaptive weight dynamic adjustment. The simulation test in CarSim-Simulink co-simulation model and the vehicle road test are carried out. The results show that the proposed vehicle sideslip angle estimation method can effectively improve the accuracy of vehicle state estimation and adaptability to multiple driving conditions.

Key words: state estimation, sideslip angle, Kalman filter, information fusion