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

Special Issue: 底盘&动力学&整车性能专题2022年

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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

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