To address the difficulties in accurately measuring driving state parameters and the road adhesion coefficient, in this paper, the permanent magnet synchronous motor (PMSM) was selected as the automotive in-wheel motor, and the distributed drive electric vehicle (DDEV) simulation model was built based on CarSim and MATLAB/Simulink software. PMSM speed estimation by Adaptive Sliding Mode Observer (ASMO) was used as input information for subsequent studies of state parameters and road adhesion coefficient estimation. Next, this paper established a nonlinear three-degrees-of-freedom whole-vehicle dynamics reference model based on the Dugoff tire model. We derived a suboptimal fading factor using strong tracking theory (STT) and introduced it into the square root of the prediction error covariance of the square-root cubature Kalman filter (SCKF) algorithm. A strong tracking square-root cubature Kalman filter (ST-SCKF) observer was constructed. Improved algorithm estimation accuracy and the ability to cope with sudden changes in operating conditions improve the estimation accuracy of the DDEV driving state parameters and road adhesion coefficient. Finally, a joint CarSim and MATLAB/Simulink simulation and experiments on real vehicles were carried out. The results show that, compared to the traditional CKF (cubature Kalman filter, CKF) and SCKF algorithms, the ST-SCKF algorithm is able to estimate vehicle state parameters and road adhesion coefficients more accurately while maintaining good estimation accuracy for docked road conditions with sudden changes in the road adhesion coefficient.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Estimation of state parameters and road adhesion coefficients for distributed drive electric vehicles based on a strong tracking SCKF


    Contributors:
    Rongyun, Zhang (author) / Bin, Zhang (author) / Peicheng, Shi (author) / Linfeng, Zhao (author) / Yongle, Feng (author) / Yaming, Liu (author)


    Publication date :

    2024-05-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Road adhesion coefficient estimation method based on fast convergence SCKF and adaptive tire stiffness and medium

    ZHANG ZHIFEI / YE JIA / JIN JIE et al. | European Patent Office | 2023

    Free access

    An estimation scheme of road friction coefficient based on novel tyre model and improved SCKF

    Zhang, Zhida / Zheng, Ling / Wu, Hang et al. | Taylor & Francis Verlag | 2022




    State Estimation of Distributed Electric Vehicles

    Chu, Wenbo | Springer Verlag | 2015